Zobrazeno 1 - 10
of 20
pro vyhledávání: '"G.M. Summers"'
Autor:
G.M. Summers, N.J. Mason, Richard J. Warburton, P.J. Walker, Robin J. Nicholas, G. M. Sundaram
Cyclotron resonance measurements are reported for both electrons and holes in type II InAs/GaSb superlattices and double heterostructures (DHETS). Superlattice (multi quantum well) samples of InAs/GaSb grown by MOVPE have sufficiently high hole gas m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::beb6c00f0a11d033425e991c68d1552c
https://ora.ox.ac.uk/objects/uuid:d6620aa0-a8b3-410c-941c-0a35939976ca
https://ora.ox.ac.uk/objects/uuid:d6620aa0-a8b3-410c-941c-0a35939976ca
Autor:
Robin J. Nicholas, Stephen Hill, P J Gee, J.G. Michels, G.M. Summers, Richard J. Warburton, M.S. Daly, C. T. Foxon, J. J. Harris, John Singleton
Publikováno v:
Physical Review B. 54:13807-13815
The cyclotron resonance of high-mobility GaAs/Al xGa12xAs heterojunctions displays both a temperature and Landau-level occupancy n dependence. For occupancies below ;1/10, the behavior is identical to that found in high-purity bulk GaAs with spin spl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cbeb64ea9d80ac410173fd0f829c11e
https://doi.org/10.1103/physrevb.54.13807
https://doi.org/10.1103/physrevb.54.13807
Publikováno v:
Physical Review B. 52:2688-2696
The energy levels of confined subbands in very-high-mobility GaAs/${\mathrm{Al}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As heterostructures are experimentally determined using the resonant coupling between the electric subba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::010075121daba2cebb0dff4d352ce340
https://doi.org/10.1103/physrevb.52.2688
https://doi.org/10.1103/physrevb.52.2688
Autor:
C. T. Foxon, J. J. Harris, G.M. Summers, Robin J. Nicholas, Stephen Hill, John Singleton, R.J. Warburton, J.G. Michels, P J Gee
Publikováno v:
Surface Science. 305:33-41
A helium dilution refrigerator has been modified to enable cyclotron resonance measurements to 100 mK on low-density, 2D electron systems in the ultra-quantum limit. Previous cyclotron resonance work to 300 mK indicates the presence of a phase bounda
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::765ecd81e4b4b6978334a954a19f89f0
https://doi.org/10.1016/0039-6028(94)90855-9
https://doi.org/10.1016/0039-6028(94)90855-9
Autor:
G.M. Summers, Stephen Hill, J.M. Chamberlain, J.A.A.J. Perenboom, S J Hawksworth, John Singleton, Robin J. Nicholas, U Ekenberg, Tjbm Janssen, G A Davies, E. C. Valadares, Mohamed Henini
Publikováno v:
Semiconductor Science and Technology, 8, 7, pp. 1465-1469
Semiconductor Science and Technology, 8, 1465-1469
Semiconductor Science and Technology, 8, 1465-1469
Cyclotron resonance of high-mobility (up to 300000 cm2 V-1 s-1 at 100 mK) GaAs/AlGaAs two-dimensional hole gases (2DHGs) grown on (311)A oriented substrates has been measured in magnetic fields up to 17 T and at temperatures down to 350 mK. The 2D ho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e07f1259347d02961b4cb9d78faad0ce
https://doi.org/10.1088/0268-1242/8/7/043
https://doi.org/10.1088/0268-1242/8/7/043
Publikováno v:
Physica B: Condensed Matter. 184:149-153
Cyclotron resonance on low density, high mobility 2-D electron systems in the ultra quantum limit shows a split and shifted resonance, corresponding to the presence of mixed phases of the system. The strength of the two components is strongly tempera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c72d9430549930ba051f2ec3ce9f7c1c
https://doi.org/10.1016/0921-4526(93)90339-8
https://doi.org/10.1016/0921-4526(93)90339-8
Autor:
Cefe López, Robin J. Nicholas, D.M. Symons, N.J. Mason, G.M. Summers, P.J. Walker, R.J. Warburton, M. Lakrimi, M.I. Erements, R.W. Martin, Ria Bogaerts, L. Van Bockstal, Fritz Herlach, D. J. Barnes, G. M. Sundaram, N. Miura, K.S.H. Dalton
Publikováno v:
Physica B: Condensed Matter. 184:268-276
A variety of optical and electrical studies are described for superlattices and heterostructures based on the materials system InAs/GaSb. The crossed-band-gap alignment of this system leads to a semimetal to semiconductor transition as a function of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e6b4dd6dfbdd0eccf172e0c3cda2ac1
https://doi.org/10.1016/0921-4526(93)90364-c
https://doi.org/10.1016/0921-4526(93)90364-c
Autor:
Robin J. Nicholas, Cefe López, P.J. Walker, R.W. Martin, N.J. Mason, G.M. Summers, K.S.H. Dalton, G. M. Sundaram, M. Lakrimi
Publikováno v:
Surface Science. 263:575-579
We describe the use of strain induced piezoelectric fields to modify the doping and band profiles of GaSb/InAs heterostructures in both the semiconducting and semimetallic regimes. The piezoelectric fields lead to substantial absorption enhancement a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2629d57c2f780b72a40fe20c4309c537
https://doi.org/10.1016/0039-6028(92)90412-y
https://doi.org/10.1016/0039-6028(92)90412-y
Autor:
L. Van Bockstal, Fritz Herlach, M.J. van der Pol, W. Van Amersfoort, G.M. Summers, John Singleton, M. von Ortenberg, L. Li
Publikováno v:
ICMWFST'96. 1996 4th International Conference on Millimeter Wave and Far Infrared Science and Technology. Proceedings.
The structure of a nondestructive pulsed magnet system for the FELIX system is described, including the power supply, magnet dewar and helium cryostat, and the preliminary results of the electrical and mechanical analysis of the 60 T magnet system ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5b38780de67e0308aa7cd0130fa1ae8
https://doi.org/10.1109/icmwft.1996.574906
https://doi.org/10.1109/icmwft.1996.574906
Publikováno v:
Journal of Crystal Growth. 107:518-519
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d2fb0d48a3371a121ebc7e25ba57428
https://doi.org/10.1016/0022-0248(91)90514-6
https://doi.org/10.1016/0022-0248(91)90514-6