School of Physics & Astronomy
   
   
  
 

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Philip Hawker

Teaching Associate/Teaching Facilities Manager, Faculty of Science

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Teaching Summary

Engineering & Physical Sciences Foundation Year (Physics pathway) Course Organiser and Admissions Tutor.

Modules Taught:

F30AF3 The Universe

F30SF1 Molecules on the Move

Research Summary

Precision radio tracking of small invertebrates.

Recent Publications

Past Research

Carrier-phonon interactions in semiconductors.

  • S.A.CAVILL, P.HAWKER AND A.J.KENT, 2003. Carrier-phonon interactions in semiconductor quantum dots and wires. In: L.J.CHALLIS, ed., Electron-Phonon Interactions in Low-Dimensional Structures Oxford University Press. 115-145
  • LEHMANN, D., KENT, A.J., JASIUKIEWICZ, CZ., CROSS, A.J., HAWKER, P. and HENINI, M., 2002. Effects of acoustic anisotropy and screening on the energy relaxation of hot electrons in heterojunctions and quantum wells Physical Review B: Condensed Matter. 65(8), 085320
  • STANTON, N. M., KENT, A. J., AKIMOV, A. V., HAWKER, P., CHENG, T. S. and FOXON, C. T., 2001. Energy relaxation by hot electrons in n-GaN epilayers Journal of Applied Physics. VOL 89(PART 2), 973-979
  • HAWKER, P., PENTLAND, I. A., KENT, A. J., NAYLOR, A. J. and HENINI, M., 2000. Probing the electronic density of states in semiconductor quantum wires using nonequilibrium acoustic phonons Physica E - Low-Dimensional Systems & Nanostructures. VOL 6(NUMBER 1-4), 522-525
  • KENT, A. J., NAYLOR, A. J., HAWKER, P. and HENINI, M., 2000. Phonon-induced conductivity of ballistic quantum wires Physical Review B: Condensed Matter. VOL 61(PART 24), R16 311-R16 314
  • P. HAWKER, A.J. KENT, L.J. CHALLIS, A. BARTELS, T. DEKORSY, H. KURZ, K. KOHLER, 2000. Observation of coherent zone-folded acoustic phonons generated by Raman scattering in a superlattice Appl. Phys. Lett.. 77, 3209
  • STANTON, N.M., KENT, A.J., HAWKER, P., CHENG, T.S., FOXON, C.T., KORAKAKIS, D., CAMPION, R.P., STADDON, C.R. and MIDDLETON, J.R., 1999. Photoenhanced wet chemical etching of MBE grown gallium nitride Materials Science and Engineering B: Solid-State Materials for Advanced Technology. VOL 68(NUMBER 1), 52 - 55
  • STANTON, N. M., HAWKER, P., KENT, A. J., CHENG, T. S. and FOXON, C. T., 1999. Hot Electron Energy Relaxation in Gallium Nitride Physica Status Solidi A: Applied Research. VOL 176(NUMBER 1), 369-372
  • HAWKER, P., KENT, A. J. and HENINI, M., 1999. Measuring the size of buried quantum dots using phonons Physica B - Physics of Condensed Matter. VOL 263/264, 514-516
  • HAWKER, P., KENT, A. J., CHENG, T. S. and FOXON, C. T., 1999. Heat pulse studies of the energy relaxation rate of hot electrons in n-type GaN epilayers Physica B - Physics of Condensed Matter. VOL 263/264, 227-229
  • HAWKER, P., KENT, A. J. and HENINI, M., 1999. Energy relaxation by photoexcited carriers in the InAs/GaAs quantum-dot system: Bolometric detection of strong acoustic-phonon emission Applied Physics Letters. VOL 75(NUMBER 24), 3832-3834
  • SHASHKIN, A. A., KENT, A. J., HAWKER, P. and HENINI, M., 1999. Time-resolved imaging of the boundary excitations of a two-dimensional electron gas in a magnetic field Physical Review B: Condensed Matter. VOL 60(PART 24), R16307-R16310
  • CROSS, A. J., KENT, A. J., HAWKER, P., LEHMANN, D., JASIUKIEWICZ, C. and HENINI, M., 1999. Phonon emission by warm electrons in GaAs quantum wells: the effect of well width on the acoustic-optic crossover Physica B - Physics of Condensed Matter. VOL 263/264, 526-529
  • JASIUKIEWICZ, C., LEHMANN, D., KENT, A. J., CROSS, A. J. and HAWKER, P., 1999. Angular and mode distribution of acoustic phonon emission by hot 2D electrons in GaAs: the effect of acoustic anisotropy and screening Physica B - Physics of Condensed Matter. VOL 263/264, 183-186
  • HAWKER, P., KENT, A.J., NAYLOR, A.J., PENTLAND, I.A., HENINI, M., CHENG, T.S. and FOXON, C.T., 1999. Probing new structures and materials using heat pulse techniques. In: Compound Semiconductors 1998
  • P. HAWKER, A.J. KENT, T.S.CHENG, C.T. FOXON, 1999. Energy Relaxation Rate of Hot Electrons in N-Type GaN Epilayers using Heat Pulse Techniques Turkish Journal of Physics. 23, 611
  • KENT, A. J., NAYLOR, A. J., PENTLAND, I. A. and HAWKER, P., 1998. Direct measurements of the electron-acoustic phonon interaction in GaAs quantum wire structures Physica B - Physics of Condensed Matter. VOL 263/264, 170-174
  • A.J. NAYLOR, A.J. KENT, I.A.PENTLAND, P. HAWKER, M. HENINI, 1998. Phonoconductivity of quantum wire structures Phys. Low-Dim. Struct. 1, 167
  • P.HAWKER, A.J. KENT, A.V.AKIMOV, M. HENINI, 1998. Phonon scattering from self-aligned InAs quantum dots in GaAs Microelectronic Engineering. 43, 25
  • SHASHKIN, A. A., KENT, A. J., OWERS-BRADLEY, J. R., CROSS, A. J., HAWKER, P. and HENINI, M., 1997. Hall Photovoltage Imaging of the Edge of a Quantum Hall Device Physical Review Letters. VOL 79(NUMBER 25), 5114-5117
  • A.J. KENT, A.J. CROSS, P.HAWKER, M. HENINI, 1997. Phonon emission by hot two dimensional electrons in GaAs devices: the mystery of the missing longitudinal mode Physica Status Solidi B. 204, 230
  • A.J. KENT, R.E. STRICKLAND, K.R.STRICKLAND, A.J. CROSS, P. HAWKER, M. HENINI, 1997. Heat-pulse study of the phonon emission by hot two-dimensional holes in a gallium arsenide heterojunction Semicond. Sci. Tech.. 12, 849
  • A.J. KENT, A.J. NAYLOR, P. HAWKER, M. HENINI, B. BRACHER, 1997. Observation of giant oscillations in the phonon-induced conductivity of a GaAs quantum wire Phys. Rev. B. 55, 9775
  • A.J.NAYLOR, A.J.KENT, P.HAWKER, M.HENINI, B.BRACHER, 1996. Acoustic phonon absorption/scattering in a quantum wire structure In: 23rd Int. Conf. Physics of Semiconductors. 1249
  • P. HAWKER, C. JAGADISH, M.R. MELLOCH, 1996. Effects of confinement on electron-phonon coupling for the two-dimensional electron gas in a GaAs/AlGaAs quantum-well Physica B. 220, 62
  • P. HAWKER, A.J. KENT, T.S.CHENG, C.T. FOXON, 1996. Phonon emission from hot carriers in an n-type GaN epilayer grown on GaAs In: 553
  • P.HAWKER, A. J. KENT, N.HAUSER, C. JAGADISH, 1995. Heat pulse studies of the phonon emission by a heated 2DEG in a GaAs/AlGaAs quantum well structure Semi. Sci. Technol.. 10, 601
  • P.HAWKER, N. HAUSER, G. LI, C. JAGADISH, M.R. MELLOCH, 1995. Suppression of deformation-potential electron-acoustic-phonon coupling in Si d-doped GaAs structures Phys. Rev. B. 52, 13738
  • LI, W. XU, P. HAWKER, A.A.ALLERMAN, N. HAUSER, C. JAGADISH, 1995. Nonlinear electron transport in Si d-doped GaAs Superlattices & Microstructures. 17, 55
  • M. TONOUCHI, P. HAWKER, M.HENINI, V. W. RAMPTON, 1995. Classical edge magnetoplasmons in the GaAs/AlGaAs two-dimensional hole system Jap. J. App. Phys. Letters. 34, 69
  • N. HAUSER, P. HAWKER, C. JAGADISH, 1994. Phonon emission from a weakly coupled AlGaAs/GaAs double quantum well structure In: 2nd Conf. on Compound Optoelectronic Materials and Devices. 234
  • M. TONOUCHI, T MIYASATO, P.HAWKER, T.S. CHENG, V. W. RAMPTON, 1994. Classical edge magnetoplasmons in the GaAs/AlGaAs two-dimensional electron system Jap. J. App. Phys. Letters. 63, 4499
  • P. HAWKER, P.F. LENNE, M.TONOUCHI, V.W. RAMPTON, C.J. MELLOR, M. HENINI, 1994. Surface acoustic wave absorption by edge magnetoplasmons in the 2DHG at a GaAs/AlGaAs heterojunction Physica B. Condensed Matter. 194, 419
  • P. HAWKER, N. HAUSER, G LI, C JAGADISH, 1994. Anomalous LA mode emission from the 2DEG in a Si d-doped GaAs structure In: 2nd Conf. Compound Optoelectronic Materials and Devices. 239
  • P. HAWKER, K. MCENANEY, P.J.A. CARTER, M. TONOUCHI, V.W. RAMPTON, 1993. The use of surface acoustic waves to estimate the conductivity of small areas of a 2-DEG In: 7th Int. Conf. on Phonon Scattering in Condensed Matter. 363
  • A.J. KENT, D.J. MCKITTERICK, L.J.CHALLIS, P. HAWKER, C.J.MELLOR, M. HENINI, 1992. Imaging nonequilibrium phonon induced backscattering in the quantum Hall regime Phys. Rev. Lett.. 69, 1684
  • A.J. KENT, D.J. MCKITTERICK, P.HAWKER, M. HENINI, 1992. Imaging the current distribution in the quantum Hall effect Helvetica Physica Acta. 65, 331
  • P. HAWKER, A.J. KENT, O.H.HUGHES, L.J. CHALLIS, 1992. Changeover from acoustic to optic mode emission by a hot two-dimensional electron gas in the gallium arsenide/aluminium gallium arsenide heterojunction Semi. Sci. Tech. 7, B29
  • A.J. KENT, P. HAWKER, M.HENINI, O.H. HUGHES, L.J. CHALLIS, 1990. An investigation of the phonons emitted by a hot two-dimensional electron gas (2DEG) in a Gallium Arsenide/Aluminium Gallium Arsenide heterojunction In: 3rd Int. Conf. on Phonon Physics. 995
  • A.J. KENT, G.A. HARDY, P.HAWKER, D.C. HURLEY, 1990. A spatially resolving heat pulse phonon detector In: 3rd Int. Conf. on Phonon Physics. 1364
  • A.J. KENT, G.A. HARDY, P.HAWKER, D.C. HURLEY, 1990. The spatial anisotropy of the phonon emission by a hot two-dimensional electron gas (2DEG) in a silicon device in a quantising magnetic field In: 3rd Int. Conf. on Phonon Physics. 1010
  • P. HAWKER, A.J. KENT, M.HENINI, O.H. HUGHES, 1989. Phonon emission by a hot two dimensional electron gas at a gallium arsenide/aluminium gallium arsenide interface Solid State Elect.. 32, 1755-9
  • D.C. HURLEY, G.A. HARDY, P.HAWKER, A.J. KENT, 1989. A spatially resolving detector for heat-pulse experiments J. Phys. E: Sci. Instrum.. 22, 824
  • P. HAWKER, A.J. KENT, L.J.CHALLIS, M. HENINI, O.H. HUGHES, 1989. Magnetophonon resonance effects in the phonon emission by a hot two-dimensional electron gas in a GaAs/AlGaAs heterojunction J. Phys.: Condensed Matter. 1, 1153
  • A.J. KENT, G.A. HARDY, P.HAWKER, V.W. RAMPTON, M.I. NEWTON, P.A. RUSSELL, L.J. CHALLIS, 1988. Detection of heat pulses by the two-dimensional electron gas in a silicon device Phys. Rev. Lett.. 61(2), 180
  • A.J. KENT, V.W. RAMPTON, M.I.NEWTON, P.J.A. CARTER, G.A.HARDY, P. HAWKER, P.A. RUSSELL, L.J. CHALLIS, 1988. Magnetic field dependence of the phonon scattering and phonon emission by a 2DEG in a Si-MOSFET Surface Science. 196, 410-6
  • A.J. KENT, M.I. NEWTON, V.W.RAMPTON, G.A. HARDY, P. HAWKER, P.A. RUSSELL, L.J. CHALLIS, 1987. The effect of a magnetic field on the phonon emission from a hot 2DEG in the inversion layer of a silicon MOSFET Jap. J. App. Phys. 26, 1757-8

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