By Scientia Professor Michelle Yvonne Simmons

Journal articles

Thomas KJ; Nicholls JT; Appleyard N; Simmons MY; Pepper M; Mace DR; Tribe WR; Ritchie DA, 1998, 'Interaction effects in a one-dimensional constriction', Physical Review - Section B - Condensed Matter, 58, pp. 4846 - 4852, http://dx.doi.org/10.1103/PhysRevB.58.4846

Wiegers S; Specht M; Levy L; Simmons MY; Ritchie DA; Cavanna A; Etienne B; Martinez G; Wyder P, 1998, 'Magnetization and incompressibility of a high mobility 2D electron gas in the IQHE', Physica B - Condensed Matter, 249-251, pp. 115 - 118, http://dx.doi.org/10.1016/S0921-4526(98)00079-9

Wiegers S; Specht M; Bibow E; Levy L; Melinte S; Grivel E; Bayot V; Simmons MY; Ritchie DA; Shayegan M; Cavanna A; Etienne B; Martinez G; Wyder P, 1998, 'Magnetization of an incompressible two-dimensional electron gas', Physica B - Condensed Matter, 256-258, pp. 16 - 22, http://dx.doi.org/10.1016/S0921-4526(98)00581-X

Osborne J; Shields AJ; Simmons MY; Cooper N; Ritchie DA; Pepper M, 1998, 'Magneto-optical study of excitonic states in 2DEGs near filling factor v=1', Physica B - Condensed Matter, 249-251, pp. 538 - 543, http://dx.doi.org/10.1016/S0921-4526(98)00181-1

Hamilton AR; Simmons MY; Griffiths T; Savchenko AK; Pepper M; Ritchie DA, 1998, 'Many-body interactions, the quantum Hall effect, and insulating phases in bilayer two-dimensional hole-gas systems', Physica B - Condensed Matter, 249-251, pp. 819 - 823, http://dx.doi.org/10.1016/S0921-4526(98)00322-6

Simmons MY; Hamilton AR; Pepper M; Linfield EH; Rose PD; Ritchie DA; Savchenko AK; Griffiths T, 1998, 'Metal-insulator transition at B=0 in a dilute two dimensional GaAs-AlGaAs hole gas', Physical Review Letters, 80, pp. 1292 - 1295, http://dx.doi.org/10.1103/PhysRevLett.80.1292

Simmons MY; Hamilton AR; Griffiths T; Savchenko AK; Pepper M; Ritchie DA, 1998, 'Metal-insulator transition at B=0 in an ultra-low density two-dimensional hole gas', Physica B - Condensed Matter, 249-251, pp. 705 - 709, http://dx.doi.org/10.1016/S0921-4526(98)00296-8

Daneshvar A; Ford CJ; Hamilton AR; Simmons MY; Pepper M; Ritchie DA, 1998, 'Multiple subband crossing in a one-dimensional hole gas with enhanced g-factors', Physica B - Condensed Matter, 249-251, pp. 166 - 170, http://dx.doi.org/10.1016/S0921-4526(98)00091-X

Franklin J; Simmons MY; Ford CJ; Ritchie DA; Pepper M, 1998, 'Non-equilibrium transport along an edge of variable slope in the fractional quantum Hall regime', Physica B - Condensed Matter, 249-251, pp. 405 - 409, http://dx.doi.org/10.1016/S0921-4526(98)00144-6

Thomas KJ; Nicholls JT; Simmons MY; Pepper M; Mace DR; Ritchie DA, 1998, 'Nonlinear transport in a single-mode one-dimensional electron gas', Philosophical Magazine B, 77, pp. 1213 - 1218, http://dx.doi.org/10.1080/014186398258609

Zolleis K; Barnes CW; Davies A; Simmons MY; Ritchie DA; Pepper M, 1998, 'Onset of subband locking in double-quantum-well structures as the signature of wave function delocalization', Physica B - Condensed Matter, 249-251, pp. 850 - 854, http://dx.doi.org/10.1016/S0921-4526(98)00329-9

Davies A; Barnes CW; Zolleis K; Simmons MY; Ritchie DA, 1998, 'Probing the transition from insulating to metallic behaviour using bi-layer electron systems', Physica B - Condensed Matter, 256-258, pp. 417 - 423, http://dx.doi.org/10.1016/S0921-4526(98)00577-8

Kainth D; Richards D; Hughes H; Simmons MY; Ritchie DA, 1998, 'Raman scattering study of the plasmon modes in bilayer systems', Physica E - Low - Dimensional Systems and Nanostructures, 2, pp. 834 - 838, http://dx.doi.org/10.1016/S1386-9477(98)00170-2

Davies H; Harris J; Brockbank R; Ryan J; Turberfield A; Simmons MY; Ritchie DA, 1998, 'Skyrmion-hole excitations at v=1 studied by photoluminescence spectroscopy', Physica B - Condensed Matter, 249-251, pp. 544 - 548, http://dx.doi.org/10.1016/S0921-4526(98)00182-3

Shields AJ; Osborne J; Simmons MY; Whittaker D; Bolton F; Ritchie DA; Pepper M, 1998, 'Stark effect of negatively and positively charged excitons in semiconductor quantum wells', Physica E - Low - Dimensional Systems and Nanostructures, 2, pp. 87 - 92, http://dx.doi.org/10.1016/S1386-9477(98)00020-4

Kainth D; Simmons MY; Hughes H; Richards D; Ritchie DA, 1998, 'Temperature-dependent Landau damping of the acoustic plasmon in a bilayer system', Physical Review - Section B - Condensed Matter, 57, pp. R2065 - R2068, http://dx.doi.org/10.1103/PhysRevB.57.R2065

Appleyard N; Nicholls JT; Simmons MY; Tribe WR; Pepper M, 1998, 'Thermometer for the 2D electron gas using 1D thermopower', Physical Review Letters, 81, pp. 3491 - 3494, http://dx.doi.org/10.1103/PhysRevLett.81.3491

Patel NJ; Millard S; Foden C; Linfield EH; Simmons MY; Ritchie DA; Pepper M, 1997, 'Compressibility studies of two-dimensional electron gases', Superlattices and Microstructures, 21, pp. 125 - 129, http://dx.doi.org/10.1006/spmi.1996.0182

Millard S; Patel NJ; Foden C; Linfield EH; Simmons MY; Ritchie DA; Pepper M, 1997, 'Effect of finite quantum-well width on the compressibility of a two-dimensional electron gas', Physical Review - Section B - Condensed Matter, 55, pp. 6715 - 6718, http://dx.doi.org/10.1103/PhysRevB.55.6715

Shields AJ; Bolton F; Simmons MY; Pepper M; Ritchie DA, 1997, 'Electric-field-induced ionization of negatively charged excitons in quantum wells', Physical Review - Section B - Condensed Matter, 55, pp. R1970 - R1972, http://dx.doi.org/10.1103/PhysRevB.55.R1970

Daneshvar A; Ford CJ; Hamilton AR; Simmons MY; Pepper M; Ritchie DA, 1997, 'Enhanced g factors of a one-dimensional hole gas with quantized conductance', Physical Review - Section B - Condensed Matter, 55, pp. R13409 - R13412, http://dx.doi.org/10.1103/PhysRevB.55.R13409

Liang CT; Frost J; Simmons MY; Ritchie DA; Pepper M, 1997, 'Experimental evidence of a metal-insulator transition in a half-filled Landau level', Solid State Communications, 102, pp. 327 - 330, http://dx.doi.org/10.1016/S0038-1098(96)00764-8

Simmons MY; Hamilton AR; Stevens S; Ritchie DA; Pepper M; Kurobe A, 1997, 'Fabrication of high mobility in situ back-gated (311)A hole gas heterojunctions', Applied Physics Letters, 70, pp. 2750 - 2752, http://dx.doi.org/10.1063/1.119012

Wiegers S; Specht M; Levy L; Simmons MY; Ritchie DA; Cavanna A; Etienne B; Martinez G; Wyder P, 1997, 'Magnetization and energy gaps of a high-mobility 2D electron gas in the quantum limit', Physical Review Letters, 79, pp. 3238 - 3241, http://dx.doi.org/10.1103/PhysRevLett.79.3238

Daneshvar A; Ford CJ; Simmons MY; Khaetskii A; Hamilton AR; Pepper M; Ritchie DA, 1997, 'Magnetization instability in a two-dimensional system', Physical Review Letters, 79, pp. 4449 - 4452, http://dx.doi.org/10.1103/PhysRevLett.79.4449

Shields AJ; Osborne J; Whittaker D; Simmons MY; Pepper M; Ritchie DA, 1997, 'Negatively charged excitons in coupled double quantum wells', Physical Review - Section B - Condensed Matter, 55, pp. 1318 - 1321, http://dx.doi.org/10.1103/PhysRevB.55.1318

Millard S; Patel NJ; Foden C; Simmons MY; Ritchie DA; Jones G; Pepper M, 1997, 'Observation of magnetic breakdown in coupled double quantum wells', Physical Review - Section B - Condensed Matter, 55, pp. R13401 - R13404, http://dx.doi.org/10.1103/PhysRevB.55.R13401

Garro N; Phillips R; Cantarero A; Simmons MY; Ritchie DA, 1997, 'Resonant Rayleigh scattering by confined two-dimensional excitonic states', Physica Status Solidi B - Basic Solid State Physics, 204, pp. 45 - 48, http://dx.doi.org/10.1002/1521-3951(199711)204:13.0.CO;2-7

Garro N; Pugh L; Phillips R; Drouot V; Simmons MY; Kardynal B; Ritchie DA, 1997, 'Resonant Rayleigh scattering by excitonic states laterally confined in the interface roughness of GaAs/AlxGa1-xAs single quantum wells', Physical Review - Section B - Condensed Matter, 55, pp. 13752 - 13760, http://dx.doi.org/10.1103/PhysRevB.55.13752

Simmons MY; Hamilton AR; Kurobe A; Stevens S; Ritchie DA; Pepper M, 1997, 'The physics and fabrication of in situ back-gated (311)A hole gas heterojunctions', Microelectronics Journal, 28, pp. 795 - 801, http://dx.doi.org/10.1016/S0026-2692(96)00118-8

Whittaker D; Shields AJ; Simmons MY; Ritchie DA, 1997, 'X- singlet and triplet states at high magnetic fields', Physica Status Solidi A: Applications and Materials Science, 164, pp. 339 - 342, http://dx.doi.org/10.1002/1521-396X(199711)164:13.0.CO;2-H

Frost J; Liang CT; Mace DR; Simmons MY; Ritchie DA; Pepper M, 1996, 'Ballistic composite fermions in semiconductor nanostructures', Physical Review - Section B - Condensed Matter, 53, pp. 9602 - 9605, http://dx.doi.org/10.1103/PhysRevB.53.9602

Shields AJ; Osborne J; Simmons MY; Ritchie DA; Pepper M, 1996, 'Comparison of optical and transport measurements of electron densities in GaAs/AlxGa1-xAs quantum wells', Semiconductor Science and Technology, 11, pp. 890 - 896, http://dx.doi.org/10.1088/0268-1242/11/6/007

Millard S; Patel NJ; Simmons MY; Linfield EH; Ritchie DA; Jones G; Pepper M, 1996, 'Compressibility studies of double electron and double hole gas systems', Applied Physics Letters, 68, pp. 3323 - 3325, http://dx.doi.org/10.1063/1.116045

Barnes CW; Mace DR; Faini G; Mailly D; Simmons MY; Ford CJ; Pepper M, 1996, 'Detection of the oscillation of the Fermi energy of a 2DEG', Surface Science, 361-362, pp. 608 - 612, http://dx.doi.org/10.1016/0039-6028(96)00481-5

Shields AJ; Pepper M; Simmons MY; Ritchie DA, 1996, 'Evolution of GaAs quantum well excitons with excess electron density and magnetic field', Solid - State Electronics, 40, pp. 275 - 280, http://dx.doi.org/10.1016/0038-1101(95)00264-2

Phillips R; Nixon G; Fujita T; Simmons MY; Ritchie DA, 1996, 'Excitonic trions in undoped GaAs quantum wells', Solid State Communications, 98, pp. 287 - 291, http://dx.doi.org/10.1016/0038-1098(96)00069-5

Hamilton AR; Simmons MY; Bolton F; Patel NJ; Millard S; Nicholls JT; Ritchie DA; Pepper M, 1996, 'Fractional quantum Hall effect in bilayer two-dimensional hole-gas systems', Physical Review - Section B - Condensed Matter, 54, pp. R5259 - R5262, http://dx.doi.org/10.1103/PhysRevB.54.R5259

Davies A; Barnes CW; Zolleis K; Nicholls JT; Simmons MY; Ritchie DA, 1996, 'Hybridization of single- and double-layer behavior in a double-quantum-well structure', Physical Review - Section B - Condensed Matter, 54, pp. R17331 - R17334, http://dx.doi.org/10.1103/PhysRevB.54.R17331

Millard S; Patel NJ; Simmons MY; Hamilton AR; Ritchie DA; Pepper M, 1996, 'Integer quantum Hall states in coupled double electron gas systems at mismatched carrier densities', Journal of Physics: Condensed Matter, 8, pp. L1311 - L318, http://dx.doi.org/10.1088/0953-8984/8/22/001

Shields AJ; Pepper M; Simmons MY; Ritchie DA, 1996, 'Magneto-optical spectroscopy of neutral and negatively charged excitons in GaAs quantum wells', Surface Science, 361-362, pp. 451 - 455, http://dx.doi.org/10.1016/0039-6028(96)00443-8

Liang CT; Smith CG; Mace DR; Nicholls JT; Frost J; Simmons MY; Hamilton AR; Ritchie DA; Pepper M, 1996, 'Measurements of a composite fermion split-gate', Surface Science, 361-362, pp. 71 - 74, http://dx.doi.org/10.1016/0039-6028(96)00333-0

Liang CT; Smith CG; Mace DR; Nicholls JT; Frost J; Simmons MY; Hamilton AR; Ritchie DA; Pepper M, 1996, 'Measurements of a composite fermion split-gate device', Physical Review - Section B - Condensed Matter, 53, pp. R7596 - R7598, http://dx.doi.org/10.1103/PhysRevB.53.R7596

Millard S; Patel NJ; Linfield EH; Rose PD; Simmons MY; Ritchie DA; Jones G; Pepper M, 1996, 'Negative transconductance in parallel conducting systems controlled by device geometry and magnetic field', Semiconductor Science and Technology, 11, pp. 483 - 488, http://dx.doi.org/10.1088/0268-1242/11/4/004

Shilton J; Mace DR; Talyanskii V; Galperin Y; Simmons MY; Pepper M; Ritchie DA, 1996, 'On the acoustoelectric current in a one-dimensional channel', Journal of Physics: Condensed Matter, 8, pp. L337 - L343, http://dx.doi.org/10.1088/0953-8984/8/24/001

Thomas KJ; Nicholls JT; Simmons MY; Pepper M; Mace DR; Ritchie DA, 1996, 'Possible spin polarization in a one-dimensional electron gas', Physical Review Letters, 77, pp. 135 - 138, http://dx.doi.org/10.1103/PhysRevLett.77.135

Brosh B; Simmons MY; Holmes SN; Hamilton AR; Ritchie DA; Pepper M, 1996, 'Probing the band structure of a two-dimensional hole gas using a one-dimensional superlattice', Physical Review - Section B - Condensed Matter, 54, pp. R14273 - R14276, http://dx.doi.org/10.1103/PhysRevB.54.R14273

Kernohan E; Phillips R; Bairamov B; Ritchie DA; Simmons MY, 1996, 'Raman scattering lineshapes in GaAs and InP', Solid State Communications, 100, pp. 263 - 267, http://dx.doi.org/10.1016/0038-1098(96)00411-5

Franklin J; Zailer I; Ford CJ; Simpson P; Frost J; Ritchie DA; Simmons MY; Pepper M, 1996, 'The Aharonov-Bohm effect in the fractional quantum Hall regime', Surface Science, 361-362, pp. 17 - 21, http://dx.doi.org/10.1016/0039-6028(96)00320-2

Chabasseur-Molyneux V; Frost J; Simmons MY; Ritchie DA; Pepper M, 1996, 'Transport through an array of small ohmic contacts alloyed to the two-dimensional electron gas of a GaAs/AlGaAs heterostructure', Applied Physics Letters, 68, pp. 3434 - 3436, http://dx.doi.org/10.1063/1.115784

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