Dr Paul Kinsler.
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<> Copyright 1997, Institute for Scientific Information Inc.
<>
<> Database: Science Citation Index
<>
<>
<> (1) TI: Macroscopic quantization in quantum optics and cavity quantum
<> electrodynamics: Interatomic interactions
<> AU: Dalton_BJ, Babiker_M
<> NA: UNIV QUEENSLAND,DEPT PHYS,BRISBANE,QLD 4072,AUSTRALIA
<> UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW A, 1997, Vol.56, No.1, pp.905-911
<> IS: 1050-2947
<> AB: We extend previous work on macroscopic canonical quantization
<> leading to a multipolar Hamiltonian appropriate for application
<> to quantum optics and cavity QED situations involving classical
<> optical devices. In particular, we show that the electric
<> displacement is the negative of the conjugate momentum field
<> and that the Coulomb and polarization energies are equal to the
<> sum of intra-atomic Coulomb and polarization energies and
<> interatomic contact energies. The quantum Hamiltonian is now in
<> a form in which the theory is manifestly gauge invariant.
<> KP: TRANSFORMATION, SYSTEMS
<>
<> (2) TI: Emission of interface modes by dipoles in photonic crystals
<> AU: Babiker_M, Kamli_A, Enfati_N, AlHajri_A
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> KING SAUD UNIV,DEPT PHYS,ABHA,SAUDI ARABIA
<> JN: SUPERLATTICES AND MICROSTRUCTURES, 1997, Vol.22, No.1, pp.121-
<> 125
<> IS: 0749-6036
<> AB: The emission of interface polaritons by electric dipoles is
<> considered for dipoles embedded in photonic crystals. It is
<> shown that in a one-dimensionally periodic photonic crystal the
<> interface oscillations form frequency bands and, via a d . E
<> interaction, they provide strong relaxation channels whenever
<> the dipole frequency Omega lies within the bands. Dipole
<> relaxation rates are displayed for varying dipole position and
<> also when Omega is varied for a given dipole position. Band
<> edge effects associated with the interface modes are pointed
<> out and discussed. (C) 1997 Academic Press Limited.
<> WA: quantum optics, photonic, bandgap crystals, spontaneous
<> emission
<>
<> (3) TI: Dipole relaxation in dispersive photonic band-gap structures
<> AU: Kamli_A, Babiker_M, AlHajry_A, Enfati_N
<> NA: KING SAUD UNIV,DEPT PHYS,POB 9003,ABHA,SAUDI ARABIA
<> UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW A, 1997, Vol.55, No.2, pp.1454-1461
<> IS: 1050-2947
<> AB: Photonic structures are considered with the emphasis on
<> dispersive materials and on one-dimensionally periodic
<> structures. The electromagnetic frequency bands and the
<> corresponding field distributions are determined for a
<> GaAs/AlAs one-dimensional photonic structure and the field
<> quantization is established. The interaction is considered
<> between the electromagnetic fields and an oscillating electric
<> dipole located deep within the layers. This involves coupling
<> to the polariton modes of this inhomogeneous medium, with each
<> type of mode providing a dipole relaxation channel. Relaxation
<> processes due to emission into the polariton channels are
<> analyzed. The results are displayed in terms of the emission
<> rate Gamma versus the dipole position Z(0) for a fixed dipole
<> frequency omega(0) and against omega(0) for a fixed Z(0). These
<> results strongly indicate the existence of band-edge effects
<> associated with the dispersive response of the materials
<> comprising the layered system.
<> KP: ELECTRONS
<>
<> (4) TI: Theory of optical-phonon limited hot-electron transport in
<> quantum wires
<> AU: Zakhleniuk_NA, Bennett_CR, Constantinou_NC, Ridley_BK,
<> Babiker_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW B-CONDENSED MATTER, 1996, Vol.54, No.24,
<> pp.17838-17849
<> IS: 0163-1829
<> AB: We present a kinetic theory of a nonequilibrium electron gas in
<> a one-dimensional circular quantum wire interacting with
<> acoustic and polar optical phonons. Besides these scattering
<> mechanisms we also include an elastic interaction with
<> interface roughness for the electron momentum relaxation. We
<> have solved the Boltzmann kinetic equation analytically and
<> obtained different distribution functions for a one-dimensional
<> electron gas. A detailed kinetic analysis of the limiting case
<> of the electron gas interacting solely with optical phonons is
<> undertaken and the distribution function is found when this
<> system can be described in a self-consistent way. Our
<> analytical results are in good agreement with previous
<> numerical studies of a similar system using Monte Carlo
<> techniques. As an application of the developed theory we have
<> calculated the electric-field dependences of electron mobility
<> and average energy for different parameters of the quantum
<> wire. It is shown that at high lattice temperature the electron
<> mobility is a nonmonotonous function of the applied electric
<> field and has its maximum value at intermediate electric fields
<> when the transition from acoustic-phonon-limited to optical-
<> phonon-limited transport takes place.
<> KP: SCATTERING, MOBILITY
<>
<> (5) TI: Radiation forces on a two-level atom in a sigma(+)-sigma(-)
<> configuration of Laguerre-Gaussian beams
<> AU: Lai_WK, Babiker_M, Allen_L
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> UNIV COLORADO,JOINT INST LAB ASTROPHYS,BOULDER,CO,80309
<> JN: OPTICS COMMUNICATIONS, 1997, Vol.133, No.1-6, pp.487-494
<> IS: 0030-4018
<> AB: We investigate the radiation forces associated with the J=0--
<> >J=1 transition of a two-level atom in a laser configuration of
<> two counter-propagating Laguerre-Gaussian (LG) beams with
<> opposite circular polarisations. It is shown that, in addition
<> to the usual dissipative and dipole forces, the atom
<> experiences a torque about the beam axis. The latter arises
<> from the orbital angular momentum properties of the Laguerre-
<> Gaussian beams. The atom experiences either a static torque or
<> a purely velocity-dependent torque, depending on the relative
<> signs of the orbital angular momenta of the two LG beams. The
<> trajectories of the atom are calculated in each case by solving
<> the optical Bloch equations together with the classical
<> equation of motion for the atom.
<> KP: ORBITAL ANGULAR-MOMENTUM, OPTICAL MOLASSES, LIGHT, MOTION,
<> VAPOR, TRAP
<>
<> (6) TI: ATOM DYNAMICS IN MULTIPLE LAGUERRE-GAUSSIAN BEAMS
<> AU: ALLEN_L, BABIKER_M, LAI_WK, LEMBESSIS_VE
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW A, 1996, Vol.54, No.5, pp.4259-4270
<> IS: 1050-2947
<> AB: The leading radiation forces acting on an atom or ion subject
<> to linearly polarized Laguerre-Gaussian (LG) light are studied.
<> Particular emphasis is laid on the orbital angular momentum
<> effects associated with LG light. The optical Bloch equations
<> appropriate for the adiabatic approximation are derived and
<> used to evaluate the forces and associated torque governing the
<> atomic motion. The steady-state dynamics of the atom are
<> explored for atoms subject to a single beam and multiple
<> independent counterpropagating beams. The main features
<> responsible for the dynamics of the atom, together with the
<> dipole potentials characteristic of Laguerre-Gaussian light,
<> are identified and discussed. The theory is illustrated by the
<> numerical integration of the. equation of motion for Mg+ ions
<> in various beam configurations. This yields information on
<> trajectories, velocity evolution, and vibrational frequencies
<> at potential minima. Interesting effects involving a reciprocal
<> interplay between motions in orthogonal directions are
<> demonstrated. Such features are purely dependent on the orbital
<> angular momentum property of the light. Their possible use in
<> controlling atomic motion is investigated.
<> KP: ORBITAL ANGULAR-MOMENTUM, LIGHT-BEAMS, RADIATION PRESSURE,
<> MOTION, TRAP
<>
<> (7) TI: QUANTUM OPTICS OF PLASMON POLARITONS AND VELOCITY SUM-RULES
<> AU: ALDOSSARY_O, BABIKER_M, ENFATI_N
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> KING SAUD UNIV,DEPT PHYS,RIYADH 11451,SAUDI ARABIA
<> JN: PHYSICAL REVIEW A, 1996, Vol.54, No.3, pp.2419-2425
<> IS: 1050-2947
<> AB: We demonstrate that the reciprocal-space Hamiltonian method for
<> quantizing the electromagnetic fields in a dispersive
<> dielectric medium leads to inconsistencies when applied to the
<> cases of plasmon polaritons and coupled phonon-plasmon
<> polaritons. In particular, we show that the use of the standard
<> expressions for the dielectric functions in these two cases
<> leads to the violation of the Huttner-Barnett velocity-ratio
<> sum rule and, hence, to the breakdown of the equal-time
<> canonical field commutation relations. We show that correct
<> behavior is recoverable after the dielectric functions are
<> appropriately regularized. Regularization effectively leads in
<> each case to the introduction of an additional transverse low-
<> frequency polariton branch. This is sufficient to rectify the
<> theory and there is no need to invoke the presence of the
<> longitudinal modes. The theory is illustrated with reference to
<> the coupled phonon-plasmon polaritons of Si-doped GaAs.
<> KP: DIELECTRIC MEDIA, SQUEEZED-LIGHT, ELECTROMAGNETIC-FIELD,
<> PARAMETRIC-AMPLIFIER, QUANTIZATION, ELECTRONS, ELECTRODYNAMICS,
<> PROPAGATION, GENERATION, PHONONS
<>
<> (8) TI: SPIN-ORBIT-COUPLING IN FREE-SPACE LAGUERRE-GAUSSIAN LIGHT-BEAMS
<> AU: ALLEN_L, LEMBESSIS_VE, BABIKER_M
<> NA: UNIV COLORADO,JOINT INST LAB ASTROPHYS,BOULDER,CO,80309
<> UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW A, 1996, Vol.53, No.5, pp.R2937-R2939
<> IS: 1050-2947
<> AB: The expression for the azimuthal force on an atom in a
<> circularly polarized Laguerre-Gaussian beam is shown to contain
<> a term that depends upon the coupling of the intrinsic spin and
<> orbital angular momenta of the light. Consequently, the state
<> of polarization of the light affects the gross motion of the
<> atom and not simply its internal dynamics. The effect arises
<> from the spin-orbit coupling exhibited in the linear momentum
<> density of the free-space mode.
<> KP: ANGULAR-MOMENTUM
<>
<> (9) TI: DOPPLER COOLING OF ION-CYCLOTRON MOTION IN COUNTER-PROPAGATING
<> LAGUERRE-GAUSSIAN BEAMS
<> AU: BABIKER_M, LEMBESSIS_VE, LAI_WK, ALLEN_L
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: OPTICS COMMUNICATIONS, 1996, Vol.123, No.4-6, pp.523-529
<> IS: 0030-4018
<> AB: We demonstrate theoretically that ions moving in the field of
<> two axial counter-propagating Laguerre-Gaussian (LG) light
<> modes and a constant axial magnetic field, exhibit novel
<> cooling effects. When the beams have orbital angular momentum I
<> of the same sign we find that in addition to an axial force
<> similar to the conventional plane wave Doppler cooling force,
<> there is a velocity-independent quantised torque about the
<> common beam axis which significantly influences the subsequent
<> motion of the ion. The new effects are illustrated for the
<> cooling of Mg-24(+) ions in the presence of an axial magnetic
<> held.
<> KP: ORBITAL ANGULAR-MOMENTUM, RADIATION, ATOMS
<>
<> (10) TI: THE INTERACTION OF ELECTRONS WITH OPTICAL PHONONS IN EMBEDDED
<> CIRCULAR AND ELLIPTIC GAAS QUANTUM WIRES
<> AU: BENNETT_CR, CONSTANTINOU_NC, BABIKER_M, RIDLEY_BK
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS-CONDENSED MATTER, 1995, Vol.7, No.50,
<> pp.9819-9831
<> IS: 0953-8984
<> AB: We consider electronic intrasubband transitions involving the
<> confined and interface optical phonons of circular and
<> elliptical GaAs quantum wires. Detailed treatments are given
<> for a GaAs wire embedded in AIAs where the electrons are
<> confined via an infinite potential barrier. The optical phonons
<> are described using the dielectric continuum (DC) model, which
<> for the GaAs/AIAs system compares favourably with more
<> sophisticated macroscopic models and ab initio microscopic
<> calculations in its prediction for the total scattering rates.
<> The DC model has been applied previously to the circular case,
<> but here we evaluate the rates analytically. It is shown that
<> the behaviour of the electrons and phonons in elliptical wires
<> is both quantitatively and qualitatively different from that in
<> circular wires, especially as regards angular properties.
<> KP: INTERFACE PHONONS, SCATTERING RATES, LO PHONONS, WELLS,
<> HETEROSTRUCTURES, SYSTEMS, ALAS
<>
<> (11) TI: ATOMIC MOTION IN LIGHT-BEAMS POSSESSING ORBITAL ANGULAR-
<> MOMENTUM
<> AU: POWER_WL, ALLEN_L, BABIKER_M, LEMBESSIS_VE
<> NA: UNIV LONDON IMPERIAL COLL SCI & TECHNOL,BLACKETT LAB,OPT
<> SECT,LONDON SW7 2BZ,ENGLAND
<> UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW A, 1995, Vol.52, No.1, pp.479-488
<> IS: 1050-2947
<> KP: RADIATION PRESSURE
<>
<> (12) TI: QUANTUM-THEORY OF RADIATION-PRESSURE FLUCTUATIONS ON A MIRROR
<> AU: SAMPHIRE_P, LOUDON_R, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW A, 1995, Vol.51, No.4, pp.2726-2737
<> IS: 1050-2947
<> KP: FABRY-PEROT-INTERFEROMETER, CASIMIR FORCE, FINITE OBJECTS,
<> LIMITS, VACUUM
<>
<> (13) TI: EFFECT OF CROSS-SECTIONAL GEOMETRY ON THE RPA PLASMONS OF
<> QUANTUM WIRES
<> AU: BENNETT_CR, TANATAR_B, CONSTANTINOU_NC, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> BILKENT UNIV,DEPT PHYS,BILKENT 06533,TURKEY
<> JN: SOLID STATE COMMUNICATIONS, 1994, Vol.92, No.12, pp.947-950
<> IS: 0038-1098
<> AB: The effect of cross-sectional geometry on both the intrasubband
<> plasmon and intersubband plasmon of a quantum wire is
<> investigated within a two-subband RPA scheme. Exact analytical
<> electronic wavefunctions for circular, elliptical and
<> rectangular wires are employed within the infinite barrier
<> approximation. It is found that for fixed cross-sectional area
<> and linear electron concentration, the intrasubband plasmon
<> energy is only marginally dependent on the wire geometry
<> whereas the intersubband plasmon energy may change considerably
<> due to its dependence on the electronic subband energy
<> difference.
<> KP: CONFINED SEMICONDUCTOR STRUCTURES, ELEMENTARY EXCITATION
<> SPECTRUM, DIMENSIONAL ELECTRON-SYSTEMS, MAGNETIC-FIELD, WELL
<> WIRES
<> WA: A NANOSTRUCTURES, A SEMICONDUCTORS, D DIELECTRIC RESPONSE
<>
<> (14) TI: CONTINUUM MODEL OF THE OPTICAL MODES OF VIBRATION OF AN IONIC-
<> CRYSTAL SLAB
<> AU: RIDLEY_BK, ALDOSSARY_O, CONSTANTINOU_NC, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,WIVENHOE PK,COLCHESTER CO4
<> 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW B-CONDENSED MATTER, 1994, Vol.50, No.16,
<> pp.11701-11709
<> IS: 0163-1829
<> AB: Optical vibrations of a thin ionic slab are described by a
<> macroscopic theory involving the hybridization of LO, TO, and
<> interface-polariton modes. The resultant modes are triple
<> hybrids, which satisfy both elastic and electromagnetic
<> boundary conditions at the two surfaces. Analytic expressions
<> are derived for the relative ionic displacements and related
<> electric fields, and for the dispersion relations, assuming
<> elastic isotropy and neglecting retardation effects. Comparison
<> of mode patterns with those obtained by Fuchs and Kliewer, who
<> used electromagnetic boundary conditions only, show that Fuchs-
<> Kliewer modes are a good approximation to the system of the
<> triple-hybrid modes our theory describes.
<> KP: ELECTRON-PHONON INTERACTION, GAAS-ALAS SUPERLATTICES, QUANTUM-
<> WELLS, DOUBLE HETEROSTRUCTURES, FROHLICH INTERACTION,
<> DISPERSION, SCATTERING
<>
<> (15) TI: AZIMUTHAL DOPPLER-SHIFT IN LIGHT-BEAMS WITH ORBITAL ANGULAR-
<> MOMENTUM
<> AU: ALLEN_L, BABIKER_M, POWER_WL
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,BLACKETT LAB,OPT
<> SECT,LONDON SW7 2BZ,ENGLAND
<> JN: OPTICS COMMUNICATIONS, 1994, Vol.112, No.3-4, pp.141-144
<> IS: 0030-4018
<> DT: Note
<> AB: We show that an atom moving in a light beam with orbital
<> angular momentum experiences an azimuthal shift in the resonant
<> frequency in addition to the usual axial Doppler and recoil
<> shifts. For a Laguerre-Gaussian beam characterised by an
<> orbital angular momentum quantum number l, the shift is
<> lV(phi)/r where r is the radial atomic position and V-phi the
<> azimuthal component of velocity. The predicted shift could play
<> a significant role in interactions between atoms and standing
<> light fields in cooling experiments as well as in ion traps.
<>
<> (16) TI: LIGHT-INDUCED TORQUE ON MOVING ATOMS
<> AU: BABIKER_M, POWER_WL, ALLEN_L
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,BLACKETT LAB,OPT
<> SECT,LONDON SW7 2BZ,ENGLAND
<> JN: PHYSICAL REVIEW LETTERS, 1994, Vol.73, No.9, pp.1239-1242
<> IS: 0031-9007
<> AB: We show that a two-level atom moving in a Laguerre-Gaussian
<> beam is subject to a light-induced torque, T, about the beam
<> axis which is directly proportional to l, the orbital angular
<> momentum quantum number of the mode. The torque, which has a
<> Lorentzian frequency response which includes an azimuthal l-
<> dependent Doppler shift in the detuning term, reduces in the
<> saturation limit to the simple form T almost-equal-to
<> HBARlGAMMA, where 2GAMMA is the decay rate of the excited
<> state.
<> KP: ORBITAL ANGULAR-MOMENTUM, LASER, BEAM
<>
<> (17) TI: COUPLING OF ELECTRONS TO INTERFACE PHONONS IN SEMICONDUCTOR
<> QUANTUM-WELLS - REPLY
<> AU: BABIKER_M, RIDLEY_BK
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW B-CONDENSED MATTER, 1993, Vol.48, No.16,
<> pp.12342-12344
<> IS: 0163-1829
<> DT: Letter
<> AB: We consider the main points raised by Knipp and Reinecke (KR)
<> in their comments on our paper [Phys. Rev. B 43, 9096 (1991)].
<> We maintain that the interface modes described by KR are
<> interface polaritons and that they couple to electrons via a
<> minimal coupling in terms of a vector potential. We emphasize
<> that guided and bulk polaritons couple weakly to electrons via
<> an A.p interaction, in contrast to the interface polaritons,
<> which couple strongly to electrons, also via an A.p
<> interaction. We argue that in the radiation (or transverse)
<> gauge, the retarded interface modes have no scalar potential
<> (phi=0), and their vector potential has only a transverse
<> component A(perpendicular-to), and not both transverse and
<> longitudinal components. We point out that KR's retarded
<> electric fields are identical to ours, but maintain that our
<> use of only a transverse vector potential is appropriate. For
<> the wave vectors of interest to electron scattering, we agree
<> with KR that the fields are unretarded, but the interaction
<> remains in the minimal coupling form, simply involving the
<> unretarded limit of the same transverse vector potential. We
<> argue that only a unique unitary transformation applied to our
<> total unretarded minimally coupled Hamiltonian can lead to a
<> scalar potential form of the interaction, which we may denote
<> as ePHI, that is identical to that found by Mori and Ando
<> [Phys. Rev. B 40, 6175 (1989)]. The interaction Hamiltonian e
<> A(perpendicular-to).p/m* and the form ePHI associated with it
<> have different transition matrix elements, but they
<> nontrivially give identical results for all first-order
<> processes that are on the energy shell. We emphasize that the
<> outcome of all first-order transition-rate calculations
<> discussed by KR is indifferent to whether e A(perpendicular-
<> to).p/m* or ePHI is used.
<> KP: OPTICAL PHONONS, SUPERLATTICES, POLARITONS, MODES
<>
<> (18) TI: THEORY OF RADIATION FORCES AND MOMENTA FOR MOBILE ATOMS IN
<> LIGHT FIELDS
<> AU: LEMBESSIS_VE, BABIKER_M, BAXTER_C, LOUDON_R
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW A, 1993, Vol.48, No.2, pp.1594-1603
<> IS: 1050-2947
<> AB: A theory for a bound system of charges interacting with
<> electromagnetic fields is developed, with special emphasis on
<> the radiation-pressure effects imposed by the fields on the
<> gross motion of the charges. The theory is particularly simple
<> and transparent for the case of two opposite charges of finite
<> mass M in the electric-dipole approximation. This enables a
<> rigorous description to be given for the quantum
<> electrodynamics of the problem with the various interaction
<> terms affecting the gross motion being easily identified. Here,
<> too, it becomes clear that, even in the dipole approximation,
<> the conventional interaction term should be supplemented by the
<> so-called Rontgen term. Besides ensuring the consistency of the
<> theory for the overall (charges plus fields) system regarding
<> conservation laws, the Rontgen term has dynamical consequences.
<> This is established by explicit calculations of the expectation
<> values of the mechanical momentum [MR] and the radiation
<> pressure force [MR] on a two-level atom in the dipole
<> approximation. Results of calculations are displayed for the
<> case of a single light beam and for counter-propagating beams.
<> The feasibility of experimentally observing the transverse
<> force is explored. Generalizations of the well-known friction
<> force arising in one-dimensional optical molasses are given and
<> discussed.
<> KP: PRESSURE
<>
<> (19) TI: INTERACTION OF ELECTRONS WITH POLARITONS
<> AU: CONSTANTINOU_NC, ALDOSSARY_O, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, Vol.5, No.31,
<> pp.5581-5590
<> IS: 0953-8984
<> AB: The electromagnetic (EM) waves associated with the polariton
<> modes of bulk dielectrics are quantized using a procedure that
<> accounts for both the Em and matter fields. The interaction of
<> electrons with these polariton fields is described using the
<> minimal coupling (e/m*)A . p interaction Hamiltonian where A is
<> the transverse vector potential operator of the polariton
<> field, p the electronic momentum and m* its effective mass. The
<> electron-polariton interaction in the bulk is demonstrated to
<> be closely linked to the behaviour of the polariton group and
<> phase velocities. The same quantization procedure is then
<> employed to describe the EM fields associated with the
<> interface polaritons of a GaAs/AlAs quantum well system. The
<> coupling leads to a dependence of the scattering rate on the
<> group and phase velocities of the surface modes, just as it
<> does for the bulk excitations. In contrast to the case in the
<> bulk, it is shown that these modes are important for relaxing
<> the electron energy in narrow wells.
<> KP: PHONON INTERACTION, OPTICAL PHONONS, DOUBLE HETEROSTRUCTURES,
<> QUANTUM-WELLS, SUPERLATTICES, INTERFACE
<>
<> (20) TI: A-PERPENDICULAR-TO.P VERSUS PHI FOR COUPLING ELECTRONS TO
<> INTERFACE OPTICAL PHONONS IN QUANTUM-WELLS
<> AU: BABIKER_M, CONSTANTINOU_NC, RIDLEY_BK
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW B-CONDENSED MATTER, 1993, Vol.48, No.4,
<> pp.2236-2243
<> IS: 0163-1829
<> AB: The interface optical-phonon modes and their interaction with
<> electrons in layered semiconductor structures are considered.
<> In a canonical theory where retardation effects are retained
<> from the outset, the theory leads naturally to the quantization
<> of the free interface oscillations in the radiation gauge for
<> which the scalar potential is zero and the vector potential is
<> transverse (phi = 0, del.A = 0). The description is thus
<> entirely in terms of a transverse vector potential
<> A(perpendicular-to) which satisfies del.A(perpendicular-to) = 0
<> everywhere, except at the interfaces where, as usual, only
<> boundary conditions apply. The interaction between the two
<> subsystems (electrons and interface modes) is the well-known
<> minimal-coupling Hamiltonian which is in the form e
<> A(perpendicular-to).p/m*. The main aspects of the quantization
<> of such retarded modes are summarized. It is then shown that
<> for a double heterostructure the nonretarded vector potential
<> can be expressed in terms of the gradient of a unique field
<> operator LAMBDA which enters a unitary transformation
<> e(iLAMBDA). We demonstrate that the result of applying this
<> transformation on the total minimal-coupling Hamiltonian is the
<> unitary-equivalent Hamiltonian in which the coupling to
<> electrons is in the form ePHI. This PHI is identical to that
<> given by Mori and Ando. The matrix elements using the ePHI form
<> of coupling are then compared with those using the e
<> A(perpendicular).p/m* coupling and seen to be clearly
<> different. However, when the emission rates are evaluated using
<> the two coupling Hamiltonians, interesting and nontrivial
<> manipulations are required to prove that the same results
<> emerge for the total emission rate from any given initial
<> electronic state of the double heterostructure. The reasons for
<> the agreement of the two sets of results for first-order
<> transitions are pointed out and discussed.
<> KP: DOUBLE HETEROSTRUCTURES, FROHLICH INTERACTION, SUPERLATTICES,
<> POLARITONS
<>
<> (21) TI: 1D IMAGE-MOLECULAR QUANTUM STATES IN LAYERED MEDIA
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, Vol.5, No.14,
<> pp.2137-2142
<> IS: 0953-8984
<> AB: A charge carrier in a layered system experiences an additional
<> Coulomb potential due to its interaction with its own set of
<> images. The latter arise due to the differences between the
<> dielectric properties of the layer materials. The charge can,
<> further, form bound quantum states in its own image potential.
<> The physical situation is examined here for a double
<> heterostructure. It is first shown that for sufficiently large
<> layer thicknesses, depending on the layer materials, the ground
<> state exhibits image-molecular features. Qualitatively, such
<> features are explainable largely in terms of the overlap
<> between the first-order image-induced states due to two
<> separate interfaces. This is further substantiated by the
<> numerical solution of the Schrodinger equation which provides
<> predictions for a wide range of layer thicknesses by taking
<> account of the multiple images.
<> KP: BINDING-ENERGY, WELLS
<>
<> (22) TI: CANONICAL APPROACH TO PHOTON PRESSURE
<> AU: BAXTER_C, BABIKER_M, LOUDON_R
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW A, 1993, Vol.47, No.2, pp.1278-1287
<> IS: 1050-2947
<> AB: A theory of radiation pressure and its effects on the gross
<> motion of an aggregrate of charges is established within a
<> canonical framework. The theory indicates the existence of
<> radiation-pressure effects arising from an additional
<> interaction-the Rontgen interaction-whose origin is the
<> classical Rontgen current. A careful development of the
<> formalism reveals the importance of distinguishing between the
<> canonical and mechanical momenta of the gross motion of the
<> aggregate and of incorporating the Rontgen-type interaction
<> terms when calculating the gross-motion dynamics. A form of the
<> Rontgen interaction is present even in the dipole
<> approximation: an effect which has previously been ignored but
<> which is necessary to ensure gauge invariance of the radiation-
<> induced mechanical force. Explicit calculations of the rates of
<> change of canonical and mechanical momenta are presented for a
<> general atomic dipole, with specializations to a two-level
<> atom, revealing the presence of velocity-dependent terms in a
<> natural way. The formalism is consistent with the Minkowski
<> form of the classical momentum density of an electromagnetic
<> field.
<> KP: SEMICLASSICAL THEORY, RADIATION PRESSURE, DIELECTRIC MEDIA,
<> MOMENTUM, LIGHT, FORCES
<>
<> (23) TI: FUCHS-KLIEWER INTERFACE POLARITONS AND THEIR INTERACTIONS WITH
<> ELECTRONS IN GAAS/ALAS DOUBLE HETEROSTRUCTURES
<> AU: ALDOSSARY_O, BABIKER_M, CONSTANTINOU_NC
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1992, Vol.7, No.3B, pp.B
<> 91-B 93
<> IS: 0268-1242
<> AB: A new theoretical approach to describe the interaction of
<> electrons with Fuchs-Kliewer (FK) interface phonon polaritons
<> is outlined. The quantized vector potential A of the FK modes
<> in GaAs/AlAs quantum wells is derived and employed via the
<> minimal coupling interaction (-e/m*)A.p to evaluate the
<> intersubband and intrasubband relaxation rates. A novel
<> resonance in the intersubband rate is predicted and shown to be
<> intimately related to the FK mode dispersion. As for the
<> intrasubband rate, it is shown that for small well widths the
<> AlAs-like FK interface mode is crucial for relaxing the carrier
<> energy in GaAs/AlAs systems.
<> KP: PHONON INTERACTION, QUANTUM-WELL, SCATTERING
<>
<> (24) TI: COUPLING OF POLAR OPTICAL PHONONS TO ELECTRONS IN SUPERLATTICES
<> AND ISOLATED QUANTUM-WELLS
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,WIVENHOE PK,COLCHESTER CO4
<> 3SQ,ESSEX,ENGLAND
<> JN: SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1992, Vol.7, No.3B, pp.B
<> 52-B 59
<> IS: 0268-1242
<> AB: Theoretical models that treat optical lattice vibrations in
<> heterostructures by viewing the lattice-matched crystalline
<> media as isotropic homogeneous continua separated by smooth
<> planar interfaces, offer conceptual simplicity and are, without
<> doubt, computationally advantageous when calculations involving
<> electron-phonon interactions are carried out. The two
<> (apparently conflicting) continuum models, namely the
<> hydrodynamic (HD) and the electromagnetic (EM) models, are
<> discussed, their calculational frameworks in the context of
<> semiconductor heterostructures examined and some of their
<> predictions displayed. A statement of the HD model in terms of
<> a polariton subset plus an LO subset is given, and this permits
<> a transparent comparison with the EM model to be made. It is
<> then shown that the EM model is a non-dispersive, non-retarded
<> and subsequently mishandled version of the polariton subset of
<> the HD model and it completely disallows proper considerations
<> of longitudinal optical modes. The sources of the current
<> controversies concerning HD versus EM boundary conditions-
<> confined mode identification, existence of localized alloy
<> interface LO modes and interface FK modes, Frohlich-type
<> coupling e-PHI together with the e-phi versus - (e/m*c)A(T).p
<> couplings to electrons-are all pointed out and discussed. A
<> close agreement between some very recent predictions of the two
<> models concerning interface mode contributions to energy
<> relaxation is explained and this helps to clarify the nature of
<> the conflict regarding other contributions. Further evidence in
<> support of the HD model from recent theoretical and
<> experimental results is pointed out.
<> KP: GAAS-ALAS SUPERLATTICES, SEMICONDUCTOR SUPERLATTICES, PERIOD
<> SUPERLATTICES, CARRIER RELAXATION, EFFECTIVE-MASS, CONFINED LO,
<> HETEROSTRUCTURES, SCATTERING, SINGLE, TRANSITIONS
<>
<> (25) TI: CONTINUUM-THEORIES OF OPTICAL PHONONS AND POLARITONS IN
<> SUPERLATTICES - A BRIEF CRITIQUE
<> AU: RIDLEY_BK, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICAL REVIEW B-CONDENSED MATTER, 1991, Vol.43, No.11,
<> pp.9096-9101
<> AB: The controversy concerning the confinement of optical modes in
<> superlattices concerns the use of electromagnetic (EM) or
<> hydrodynamic (HD) boundary conditions and the roles of
<> dispersion and retardation in continuum theories, and how
<> continuum theories relate to microscopic models. In this paper
<> we describe EM and HD continuum models and discuss recent
<> attempts to reconcile the EM model with microscopic theory. We
<> conclude that the lack of retardation and dispersion in the EM
<> model results in a confusion between LO modes and polaritons.
<> In particular, we question the attribution of a LO-type
<> Frohlich scalar potential to Fuchs-Kliewer interface
<> polaritons.
<> KP: SEMICONDUCTOR SUPERLATTICES, MODES
<>
<> (26) TI: INTRASUBBAND SCATTERING BY INTERFACE AND GUIDED LO PHONONS IN
<> QUANTUM-WELLS
<> AU: CHAMBERLAIN_MP, BABIKER_M, RIDLEY_BK
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> UNIV DURHAM,APPL PHYS GRP,DURHAM DH1 3LE,ENGLAND
<> JN: SUPERLATTICES AND MICROSTRUCTURES, 1991, Vol.9, No.2, pp.227-
<> 230
<> KP: HETEROSTRUCTURES, RELAXATION
<>
<> (27) TI: DYNAMIC CONSEQUENCES OF A MODIFIED FROHLICH INTERACTION IN
<> DOPED BULK AND SUPERLATTICE SEMICONDUCTORS
<> AU: CHAMBERLAIN_MP, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICA B, 1990, Vol.162, No.3, pp.353-362
<>
<> (28) TI: GAUGE INVARIANT QED WITH ARBITRARY MIXING OF P.A AND Q.E
<> INTERACTIONS
<> AU: BAXTER_C, BABIKER_M, LOUDON_R
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF MODERN OPTICS, 1990, Vol.37, No.4, pp.685-699
<>
<> (29) TI: HAMILTONIAN DENSITY AND DISPERSION-RELATION FOR HYBRID COULOMB
<> FIELDS IN SOLIDS
<> AU: CHAMBERLAIN_MP, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICA B, 1990, Vol.160, No.3, pp.271-280
<>
<> (30) TI: ENHANCEMENT OF ENERGY RELAXATION RATES IN SEMICONDUCTOR
<> SUPERLATTICES
<> AU: CHAMBERLAIN_MP, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SOLID-STATE ELECTRONICS, 1989, Vol.32, No.12, pp.1675-1679
<>
<> (31) TI: ENHANCEMENT OF ENERGY RELAXATION RATES AT THRESHOLD WELL WIDTHS
<> IN QUANTUM WELL STRUCTURES
<> AU: CHAMBERLAIN_MP, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1989, Vol.4, No.8,
<> pp.691-695
<> DT: Letter
<>
<> (32) TI: A QUANTIZED SCREENING THEORY FOR THE SURFACE-ENERGY OF SOLIDS
<> IN THE HYDRODYNAMIC JELLIUM MODEL
<> AU: BABIKER_M, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> UNIV WESTERN ONTARIO,DEPT PHYS,LONDON N6A 3K7,ONTARIO,CANADA
<> JN: PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1989, Vol.153, No.1,
<> pp.145-151
<>
<> (33) TI: ENERGY RELAXATION DUE TO TO PHONON EMISSION IN POLAR
<> SEMICONDUCTORS
<> AU: CHAMBERLAIN_MP, BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, Vol.1, No.7,
<> pp.1181-1190
<>
<> (34) TI: INTRASUBBAND TRANSITIONS AND WELL CAPTURE VIA CONFINED, GUIDED
<> AND INTERFACE LO PHONONS IN SUPERLATTICES
<> AU: BABIKER_M, GHOSAL_A, RIDLEY_BK
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SUPERLATTICES AND MICROSTRUCTURES, 1988, Vol.5, No.1, pp.133-
<> 136
<>
<> (35) TI: RAMAN INTENSITIES AND POLARIZATION SELECTION-RULES OF PLASMON
<> POLARITONS IN SUPERLATTICE STRUCTURES
<> AU: BABIKER_M, CONSTANTINOU_NC, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> UNIV WESTERN ONTARIO,DEPT PHYS,LONDON N6A 3K7,ONTARIO,CANADA
<> JN: SOLID STATE COMMUNICATIONS, 1988, Vol.68, No.10, pp.967-970
<>
<> (36) TI: A NEW RESONANCE PHENOMENON ASSOCIATED WITH ELECTRON TRANSITIONS
<> IN SUPERLATTICES AND SINGLE QUANTUM WELLS
<> AU: BABIKER_M, CHAMBERLAIN_MP, GHOSAL_A, RIDLEY_BK
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SURFACE SCIENCE, 1988, Vol.196, No.1-3, pp.422-428
<>
<> (37) TI: HELICONS IN SUPERLATTICE PLASMAS OF FINITE LAYER THICKNESS
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SOLID STATE COMMUNICATIONS, 1987, Vol.64, No.6, pp.983-987
<>
<> (38) TI: THEORY OF RAMAN-SCATTERING BY PLASMON POLARITONS IN
<> SEMICONDUCTOR SUPERLATTICES
<> AU: BABIKER_M, CONSTANTINOU_NC, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, Vol.20, No.28,
<> pp.4597-4612
<>
<> (39) TI: GENERAL LINEAR RESPONSE THEORY OF POLARITONS IN BINARY
<> SUPERLATTICES
<> AU: BABIKER_M, CONSTANTINOU_NC, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, Vol.20, No.28,
<> pp.4581-4596
<>
<> (40) TI: RESONANCE EFFECT IN INTER-SUB-BAND TRANSITIONS OF SINGLE
<> QUANTUM WELLS
<> AU: BABIKER_M, CHAMBERLAIN_MP, RIDLEY_BK
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1987, Vol.2, No.9,
<> pp.582-586
<>
<> (41) TI: RAMAN-SCATTERING BY LONGITUDINAL MODES IN IONIC SUPERLATTICES
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICA B & C, 1987, Vol.145, No.2, pp.111-123
<>
<> (42) TI: ELECTRON ENERGY-LOSS SPECTROSCOPY ON METALLIC SUPERLATTICES
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, Vol.20, No.22,
<> pp.3321-3335
<>
<> (43) TI: EFFECTIVE-MASS EIGENFUNCTIONS IN SUPERLATTICES AND THEIR ROLE
<> IN WELL-CAPTURE
<> AU: BABIKER_M, RIDLEY_BK
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SUPERLATTICES AND MICROSTRUCTURES, 1986, Vol.2, No.4, pp.287-
<> 291
<>
<> (44) TI: ELECTRON-SCATTERING BY PLASMONS IN METALLIC SUPERLATTICES
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, Vol.19, No.32,
<> pp.L773-L777
<> DT: Letter
<>
<> (45) TI: THEORY OF RAMAN-SCATTERING BY THE PLASMA-OSCILLATIONS OF A
<> LAYERED ELECTRON-GAS IN SEMICONDUCTOR SUPERLATTICES
<> AU: BABIKER_M, CONSTANTINOU_NC, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, Vol.19, No.29,
<> pp.5849-5862
<>
<> (46) TI: EFFECTS OF FINITE CHARGE-LAYER THICKNESS IN RAMAN-SCATTERING BY
<> PLASMONS IN SEMICONDUCTOR SUPERLATTICES
<> AU: BABIKER_M, CONSTANTINOU_NC, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SOLID STATE COMMUNICATIONS, 1986, Vol.59, No.11, pp.751-755
<>
<> (47) TI: LO PHONONS IN GAAS/GA1-XALXAS SUPERLATTICES AND THEIR RAMAN-
<> SPECTRA
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, Vol.19, No.16,
<> pp.L339-L344
<> DT: Letter
<>
<> (48) TI: COMPARISON OF PHARMACOKINETIC PROFILES OF SINGLE AND MULTIPLE
<> DOSES OF A SLOW RELEASE OROS OXPRENOLOL DELIVERY SYSTEM IN
<> YOUNG NORMOTENSIVE AND ELDERLY HYPERTENSIVE SUBJECTS
<> AU: BRADBROOK_ID, BABIKER_M, CROME_P, GILLIES_HC, MORRISON_PJ,
<> ROGERS_HJ, SHOTTON_P
<> NA: UNITED MED & DENT SCH GUYS & ST THOMAS HOSP,GUYS HOSP,SCH
<> MED,DEPT CLIN PHARMACOL,LONDON SE1 9RT,ENGLAND
<> CIBA GEIGY PHARMACEUT,CLIN RES DEPT,HORSHAM RH12 4AB,W
<> SUSSEX,ENGLAND
<> ORPINGTON HOSP,GEORGE STAMP UNIT,ORPINGTON BR6 9JU,KENT,ENGLAND
<> JN: BRITISH JOURNAL OF CLINICAL PHARMACOLOGY, 1986, Vol.21, No.4,
<> pp.371-376
<>
<> (49) TI: GREEN-FUNCTION THEORY OF LIGHT-SCATTERING FROM PLASMONS IN A
<> SUPERLATTICE WITH ELECTRON-GAS LAYERS
<> AU: BABIKER_M, CONSTANTINOU_NC, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SOLID STATE COMMUNICATIONS, 1986, Vol.57, No.11, pp.877-880
<>
<> (50) TI: LONGITUDINAL POLAR OPTICAL MODES IN SEMICONDUCTOR QUANTUM WELLS
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, Vol.19, No.5,
<> pp.683-697
<>
<> (51) TI: SCATTERING OF ELECTRONS BY THE QUANTIZED BULK PLASMA MODES IN
<> ELECTRONICALLY DENSE MATERIALS
<> AU: BABIKER_M, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, Vol.19, No.2,
<> pp.161-172
<>
<> (52) TI: PHARMACOKINETIC PROFILE OF CONTROLLED RELEASE KETOPROFEN IN
<> ELDERLY PATIENTS
<> AU: DENNIS_MJ, FRENCH_PC, CROME_P, BABIKER_M, SHILLINGFORD_J,
<> HOPKINS_R
<> NA: MAY & BAKER LTD,BIOPHARMACEUT RES,DAGENHAM RM10
<> 7XS,ESSEX,ENGLAND
<> ORPINGTON HOSP,ORPINGTON,KENT,ENGLAND
<> HAZLETON LABS EUROPE LTD,HARROGATE,N YORKSHIRE,ENGLAND
<> GUYS HOSP,DEPT PHARMACOL,LONDON SE1 9RT,ENGLAND
<> JN: BRITISH JOURNAL OF CLINICAL PHARMACOLOGY, 1985, Vol.20, No.6,
<> pp.567-573
<>
<> (53) TI: A CANONICAL TRANSFORMATION FOR ELECTRON-PLASMON INTERACTIONS
<> AND ITS APPLICATION TO ELECTRON-ENERGY LOSS SPECTROSCOPY
<> AU: BABIKER_M, COTTAM_MG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SOLID STATE COMMUNICATIONS, 1985, Vol.55, No.4, pp.317-320
<>
<> (54) TI: THEORY OF INELASTIC LIGHT-SCATTERING OFF ACOUSTIC MODES IN
<> SUPERLATTICES
<> AU: BABIKER_M, TILLEY_DR, ALBUQUERQUE_EL
<> NA: UNIV EXETER,DEPT PHYS,EXETER EX4 4QD,DEVON,ENGLAND
<> UNIV FED RIO GRANDE SUL,DEPT FIS,BR-90000 PORTO
<> ALEGRE,RS,BRAZIL
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1985, Vol.18, No.6,
<> pp.1285-1303
<>
<> (55) TI: ACOUSTIC GREEN-FUNCTION FOR SUPERLATTICES
<> AU: BABIKER_M, TILLEY_DR, ALBUQUERQUE_EL, DASILVA_CETG
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> UNIV FED RIO GRANDE NORTE,DEPT FIS,BR-59000 NATAL,BRAZIL
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1985, Vol.18, No.6,
<> pp.1269-1284
<>
<> (56) TI: THEORY OF CHARGES NEAR A JELLIUM SURFACE
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL DE PHYSIQUE, 1984, Vol.45, No.NC-5, pp.465-469
<>
<> (57) TI: CROSSED-BEAM RESONANCE FLUORESCENCE - ANGULAR-DISTRIBUTIONS OF
<> SCATTERED ATOMS AND PHOTONS
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS B-ATOMIC AND MOLECULAR PHYSICS, 1984,
<> Vol.17, No.24, pp.4885-4901
<>
<> (58) TI: THEORY OF MOMENTUM CHANGES IN ATOMIC TRANSLATION DUE TO
<> IRRADIATION WITH RESONANT LIGHT
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS B-ATOMIC AND MOLECULAR PHYSICS, 1984,
<> Vol.17, No.24, pp.4877-4883
<>
<> (59) TI: EFFECTS OF OPTICAL-ABSORPTION ON THE MAIN RESONANCE IN LIGHT-
<> SCATTERING BY ACOUSTIC MODES IN SUPERLATTICES
<> AU: BABIKER_M, TILLEY_DR
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, Vol.17, No.31,
<> pp.L829-L835
<> DT: Letter
<>
<> (60) TI: GAUGE-INVARIANCE OF THE AHARONOV-BOHM EFFECT
<> AU: BABIKER_M, LOUDON_R
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1984, Vol.17,
<> No.15, pp.2973-2982
<>
<> (61) TI: INTERACTION OF CHARGES WITH METALLIC SURFACES INVALIDITY OF THE
<> SURFACE-PLASMON MODEL
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICA B&C, 1983, Vol.115, No.3, pp.339-366
<>
<> (62) TI: DERIVATION OF THE POWER-ZIENAU-WOOLLEY HAMILTONIAN IN QUANTUM
<> ELECTRODYNAMICS BY GAUGE TRANSFORMATION
<> AU: BABIKER_M, LOUDON_R
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-
<> MATHEMATICAL AND PHYSICAL SCIENCES, 1983, Vol.385, No.1789,
<> pp.439-460
<>
<> (63) TI: THE JELLIUM THEORY OF METALLIC SURFACES
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SOLID STATE COMMUNICATIONS, 1982, Vol.44, No.7, pp.1049-1054
<>
<> (64) TI: THE LORENTZ GAUGE IN NON-RELATIVISTIC QUANTUM ELECTRODYNAMICS
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-
<> MATHEMATICAL AND PHYSICAL SCIENCES, 1982, Vol.383, No.1785,
<> pp.485-502
<>
<> (65) TI: EFFECTIVE HAMILTONIAN OF THE 2-BODY PROBLEM OUTSIDE A CONDUCTOR
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICA B&C, 1982, Vol.112, No.1, pp.6-14
<>
<> (66) TI: IMAGE-INDUCED SURFACE-STATES ON METALS - THE EFFECTS OF
<> SPATIAL-DISPERSION
<> AU: BARTON_G, BABIKER_M
<> NA: UNIV SUSSEX,SCH MATH & PHYS SCI,BRIGHTON BN1 9QH,E
<> SUSSEX,ENGLAND
<> UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1981, Vol.14, No.32,
<> pp.4951-4968
<>
<> (67) TI: SURFACE-STATES AND THE INTERACTION OF NEUTRAL HYDROGEN WITH
<> SOLID-SURFACES
<> AU: BABIKER_M, TILLEY_DR
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-
<> MATHEMATICAL AND PHYSICAL SCIENCES, 1981, Vol.378, No.1774,
<> pp.369-384
<>
<> (68) TI: INTERACTION OF SURFACE-BOUND POSITRONS WITH THE QUANTIZED
<> JELLIUM MODES
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: PHYSICA B&C, 1981, Vol.103, No.2-3, pp.289-300
<>
<> (69) TI: POSITRON SURFACE-STATES BOUND BY THE NEWNS-BARTON POTENTIAL
<> AU: BABIKER_M, TILLEY_DR
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SOLID STATE COMMUNICATIONS, 1981, Vol.39, No.6, pp.691-697
<>
<> (70) TI: NEAR-IONIZATION OF NEUTRAL HYDROGEN OUTSIDE METALLIC SURFACES
<> AU: BABIKER_M, TILLEY_DR
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: SOLID STATE COMMUNICATIONS, 1981, Vol.38, No.6, pp.463-465
<>
<> (71) TI: ENHANCED LIGHT-SCATTERING BY ADSORBATES - EFFECTS OF THE
<> SURFACE-PLASMON DISPERSION-RELATION
<> AU: BABIKER_M
<> NA: UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND
<> JN: JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1981, Vol.14, No.9,
<> pp.1351-1362
<>
<> **** End of Data ****
<>
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