Zobrazeno 1 - 10
of 1 011
pro vyhledávání: '"J. E. F. Frost"'
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 2:78-81
We have measured the low-temperature transport properties of a high-mobility front-gated GaAs/Al_{0.33}Ga_{0.67}As heterostructure. By changing the applied gate voltage, we can vary the amount of disorder within the system. At a Landau level filling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42cad0f1393d120196564f1781e6e36d
https://doi.org/10.1016/s1386-9477(98)00018-6
https://doi.org/10.1016/s1386-9477(98)00018-6
Autor:
Michelle Y. Simmons, I. M. Castleton, J. E. F. Frost, Alex R. Hamilton, David A. Ritchie, Michael Pepper, A. G. Davies
Publikováno v:
Physica B: Condensed Matter. :157-161
We report the experimental study of a system comprising two parallel quasi-one-dimensional (1D) ballistic wires formed in a GaAs-Al x Ga 1− x As double quantum well structure. A unique surface gate geometry allows the device to be tuned smoothly fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fb2a9d36a45b16b25a564828b464c34
https://doi.org/10.1016/s0921-4526(98)00089-1
https://doi.org/10.1016/s0921-4526(98)00089-1
Autor:
Chi-Te Liang, Michael Pepper, Zhen-Li Ji, J. E. F. Frost, I. M. Castleton, Karl-Fredrik Berggren, David A. Ritchie, Tomas Lundberg
Publikováno v:
Semiconductor Science and Technology. 12:875-880
We have performed low-temperature conductance measurements on a quantum dot. For zero magnetic field we find transmission resonances in the regions between successive ballistic quantized conductance plateaus. The results of the conductance measuremen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35154ad3d1bd41462c9641f925b94a9d
https://doi.org/10.1088/0268-1242/12/7/018
https://doi.org/10.1088/0268-1242/12/7/018
Publikováno v:
Solid State Communications. 102:327-330
We have measured the low-temperature transport properties of a high-mobility front-gated GaAs Al 0.33 Ga 0.67 As heterostructure. By changing the applied gate voltage, we can vary the amount of disorder within the system. At a Landau level filling fa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad336988dd25469facb7d8ac711e7e54
https://doi.org/10.1016/s0038-1098(96)00764-8
https://doi.org/10.1016/s0038-1098(96)00764-8
Publikováno v:
Semiconductor Science and Technology. 11:1235-1238
We present a novel technique which employs crosslinked PMMA as a high-resolution negative resist for electron beam lithography. The technique allows the patterning of submicrometre features in an insulating layer, thus simplifying the fabrication pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11ad9a3c5689c750626c84678bca0b1d
https://doi.org/10.1088/0268-1242/11/8/021
https://doi.org/10.1088/0268-1242/11/8/021
Autor:
J. T. Nicholls, Alex R. Hamilton, J. E. F. Frost, Michael Pepper, Michelle Y. Simmons, David A. Ritchie, Charles G. Smith, D. R. Mace, Chi-Te Liang
Publikováno v:
ResearcherID
Recent theoretical and experimental work demonstrates that at filling factor v = 1/2, a two-dimensional electron gas can be described in terms of composite fermions (CFs), for which the effective magnetic field vanishes. We present low-temperature me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::723967a0aad25ce63190b5e98c5c4ed5
https://doi.org/10.1016/0039-6028(96)00333-0
https://doi.org/10.1016/0039-6028(96)00333-0
Publikováno v:
Semiconductor Science and Technology. 11:352-359
Calculations and experimental data are reported on the optical coupling to the Bernstein modes of a two-dimensional electron gas (2DEG) in a perpendicular magnetic field using an overlaid grating coupler. The Bernstein modes are harmonics of the cycl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd169f1bb290b4e0e3595e7292cc26f7
https://doi.org/10.1088/0268-1242/11/3/013
https://doi.org/10.1088/0268-1242/11/3/013
Publikováno v:
Physical Review B. 52:R5507-R5510
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6d88d6b43103cb7a465583c1816da46
https://doi.org/10.1103/physrevb.52.r5507
https://doi.org/10.1103/physrevb.52.r5507
Autor:
V. I. Talyanskii, G. A. C. Jones, A. C. Churchill, Michael Pepper, Michelle Y. Simmons, J. E. F. Frost, D. R. Mace, David A. Ritchie
Publikováno v:
Journal of Physics: Condensed Matter. 7:L435-L443
Recent theoretical studies predict a rich spectrum of edge excitations in a 2DEG in the QH regime. Experimental verification of the theory is hindered by the fact that many of these excitations are uncoupled (neutral) or weakly coupled with an extern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40ecb9c5f3e4376183cfe023f87683d1
https://doi.org/10.1088/0953-8984/7/32/003
https://doi.org/10.1088/0953-8984/7/32/003
Autor:
I. Zailer, P. J. Simpson, David A. Ritchie, J. E. F. Frost, Michael Pepper, C. J. B. Ford, Jerrold Franklin, Michelle Y. Simmons
Publikováno v:
Journal of Physics: Condensed Matter. 6:L725-L730
We have investigated experimentally resonant tunnelling through single-particle states formed around an antidot by a magnetic field, in the fractional quantum Hall regime. For 1/3 filling factor around the antidot, Aharonov-Bohm oscillations are obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b937f375b0bdf634ccbb81a6168cb50
https://doi.org/10.1088/0953-8984/6/47/001
https://doi.org/10.1088/0953-8984/6/47/001