Zobrazeno 1 - 10
of 138
pro vyhledávání: '"L. J. Challis"'
Publikováno v:
Physica B: Condensed Matter. 272:171-174
We present the first data on the change in tunnel current in a triple barrier resonant tunnelling diode (TBRTD) due to a pulse of nonequilibrium acoustic phonons. The change in current as a function of voltage ΔI(V) maps out two satellite peaks whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a1d4e4a938622076f5e54d5c4c1a352
https://doi.org/10.1016/s0921-4526(99)00264-1
https://doi.org/10.1016/s0921-4526(99)00264-1
Autor:
E. F. Ouali, D.N. Hill, Anthony J. Kent, A. V. Akimov, F.W. Sheard, P. Král, Mohamed Henini, Stuart A. Cavill, Evgenii Moskalenko, L. J. Challis
Publikováno v:
Scopus-Elsevier
We report measurements of the change in current induced by non-equilibrium phonons in a δ-doped double barrier resonant structure. In addition to the anti-Stokes and Stokes peaks resulting from tunnelling through the ground state of Si donors presen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2fa9b18249135da6c7b34179cb11632
https://doi.org/10.1002/1521-3951(199711)204:1<431::aid-pssb431>3.0.co
https://doi.org/10.1002/1521-3951(199711)204:1<431::aid-pssb431>3.0.co
Autor:
A.A. Kaplyanskii, A. V. Akimov, C. T. Foxon, A. L. Zhmodikov, Tin S. Cheng, L. J. Challis, Evgenii Moskalenko, D. A. Mazurenko
Publikováno v:
physica status solidi (b). 204:400-403
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51ad473f3c1b5ec01a8f5dd05c60e89f
https://doi.org/10.1002/1521-3951(199711)204:1<400::aid-pssb400>3.0.co
https://doi.org/10.1002/1521-3951(199711)204:1<400::aid-pssb400>3.0.co
Autor:
Tin S. Cheng, A. L. Zhmodikov, A.A. Kaplyanskii, D. A. Mazurenko, Evgenii Moskalenko, C. T. Foxon, L. J. Challis, A. V. Akimov
Publikováno v:
Physics of the Solid State. 39:649-653
We report the first studies of exciton luminescence spectra from asymmetric double quantum wells (DQWs) of very similar width. The DQWs were of GaAs/AlGaAs and the differences in widths of the coupled wells were one or two monolayers. The coupled dir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::407be8a0069cf783070eba4bcc3cc519
https://doi.org/10.1134/1.1129946
https://doi.org/10.1134/1.1129946
Autor:
A. V. Akimov, C. T. Foxon, L. J. Challis, Evgenii Moskalenko, A.A. Kaplyanskii, Tin S. Cheng, A. L. Zhmodikov, D. A. Mazurenko
Publikováno v:
Acta Physica Polonica A. 90:895-898
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a51da22bb2a1ef7d38463160cc367e6
https://doi.org/10.12693/aphyspola.90.895
https://doi.org/10.12693/aphyspola.90.895
Autor:
L. J. Challis, D.N. Hill, A. V. Akimov, F. F. Ouali, F.W. Sheard, Mohamed Henini, N.N. Zinov'ev
Publikováno v:
Surface Science. :181-184
We report measurements of assisted tunnelling induced by non-equilibrium phonons in double barrier tunnelling devices in GaAs. The phonon signal has a peak at a bias voltage which depends linearly on phonon energy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::407b3996f8b2f4783e29cbaa5c2611b2
https://doi.org/10.1016/0039-6028(96)00371-8
https://doi.org/10.1016/0039-6028(96)00371-8
Autor:
Christopher J. Mellor, Anthony J. Kent, Tin S. Cheng, Keith A. Benedict, J.E. Digby, J.R. Middleton, Uli Zeitler, L. J. Challis
Publikováno v:
Surface Science. :34-37
We report time-resolved measurements of phonon absorption in the fractional quantum Hall regime. Experiments have been conducted on an n-type heterojunction grown on a 1.8 mm GaAs wafer. The start of the absorption signal is consistent with the balli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36b42d61116bfdec840c83c78f4048d8
https://doi.org/10.1016/0039-6028(96)00324-x
https://doi.org/10.1016/0039-6028(96)00324-x
Publikováno v:
Surface Science. :392-396
We report PL studies of the kinetics of current-induced non-equilibrium Landau level (LL) populations in 2DEGs. The B −2 field dependence of the relaxation rate is inconsistent with theoretical rates for one- and two-phonon inter-LL processes, sugg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f125f47d8b637048d088dba28c2f5d7
https://doi.org/10.1016/0039-6028(96)00428-1
https://doi.org/10.1016/0039-6028(96)00428-1
Autor:
Keith A. Benedict, C. T. Foxon, Anthony J. Kent, J.E. Digby, R.H. Eyles, J. J. Harris, Christopher J. Mellor, Mohamed Henini, L. J. Challis
Publikováno v:
Physica B: Condensed Matter. :5-8
We have made the first phonon absorption measurements in the fractional quantum Hall regime. Experiments have been conducted on both high mobility n and p-type GaAs/AlGaAs heterojunctions. In the n-type samples used the electron densities were simila
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae0566e57db226da7b08d7f1cb782124
https://doi.org/10.1016/0921-4526(95)00632-x
https://doi.org/10.1016/0921-4526(95)00632-x
Publikováno v:
Physica B: Condensed Matter. :9-12
We give an overview of experiments in which luminescence detection of nonequilibrium phonons in semiconductors is used to study the interaction of acoustic phonons with two-dimensional excitons. Question which are specific for the 2D exciton-phonon i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56676947ac45af57a0bee86819029320
https://doi.org/10.1016/0921-4526(95)00633-8
https://doi.org/10.1016/0921-4526(95)00633-8