Zobrazeno 1 - 10
of 107
pro vyhledávání: '"J.G. Michels"'
Publikováno v:
Scopus-Elsevier
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Detection of continuous‐wave terahertz (THz) radiation has been demonstrated in GaAs/AlGaAs coupled quantum well p‐i‐n photodiodes by intrasubband absorption. The sharp interwell tunneling resonances observed in the photocurrent are highly sens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa5168611b1dbcbdf973a2eb61899447
https://ora.ox.ac.uk/objects/uuid:f61965b4-8c24-447f-abd7-17fae868bcde
https://ora.ox.ac.uk/objects/uuid:f61965b4-8c24-447f-abd7-17fae868bcde
Autor:
A. M. Fox, J.S. Roberts, Robin J. Nicholas, J.G. Michels, R. J. Stone, D. Kinder, C. C. Chang
Publikováno v:
ResearcherID
Scopus-Elsevier
Scopus-Elsevier
We present evidence for coupling between spatially separated excitonic states in a GaAs symmetric coupled quantum well. A split excitonic peak is observed in the photoluminescence spectrum of our sample and is identified as due to islands of monolaye
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e057ca544a4643771b699a9fa4049e2
https://ora.ox.ac.uk/objects/uuid:c3eefc7b-0f02-42dc-930e-be70b1bb02a5
https://ora.ox.ac.uk/objects/uuid:c3eefc7b-0f02-42dc-930e-be70b1bb02a5
We have detected cyclotron resonance in a series of undoped GaAs quantum wells by modulating the photoluminescence intensity with far-infrared radiation. The conduction-band mass was measured for different quantum-well widths, and good agreement with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d1630fb84cace732f16cf3edc1ffbc7
https://ora.ox.ac.uk/objects/uuid:d424fb44-6c06-4c23-b5f5-912b5b0bbe56
https://ora.ox.ac.uk/objects/uuid:d424fb44-6c06-4c23-b5f5-912b5b0bbe56
We have measured optically-detected-cyclotron-resonance on In0.05Ga0.95As/GaAs superlattices with large magnetic fields applied both parallel (Faraday) and perpendicular (Voigt) to the growth direction. Cyclotron resonance in the Voigt geometry revea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5f313932bc8d7064dc93c5907aac396
https://doi.org/10.1016/0038-1101(94)90307-7
https://doi.org/10.1016/0038-1101(94)90307-7
We have measured optically detected cyclotron resonance using far-infrared radiation on an exceptionally pure sample of GaAs in fields up to 15.5 T. This relatively new experimental technique is shown to offer high resolution of free and donor impuri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::468c6121f9327e8ff3aca0584191ecd8
https://doi.org/10.1088/0268-1242/9/2/012
https://doi.org/10.1088/0268-1242/9/2/012
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:
ResearcherID
We report studies of sequential resonant tunnelling in GaAs/AlGaAs multi-quantum well p-i-n structures in the presence of parallel magnetic fields up to 15 T. New features are observed which are attributed to inter-Landau level resonances involving a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d739492b22233fcbd3212c232134a02
https://doi.org/10.1016/0039-6028(96)00382-2
https://doi.org/10.1016/0039-6028(96)00382-2
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:
Kostic, Tanja1 (AUTHOR) tanja.kostic@ait.ac.at, Schloter, Michael2 (AUTHOR), Arruda, Paulo3 (AUTHOR), Berg, Gabriele4 (AUTHOR), Charles, Trevor C.5 (AUTHOR), Cotter, Paul D.6 (AUTHOR), Kiran, George Seghal7 (AUTHOR), Lange, Lene8 (AUTHOR), Maguin, Emmanuelle9 (AUTHOR), Meisner, Annelein10 (AUTHOR), van Overbeek, Leo10 (AUTHOR), Sanz, Yolanda11 (AUTHOR), Sarand, Inga12 (AUTHOR), Selvin, Joseph7 (AUTHOR), Tsakalidou, Effie13 (AUTHOR), Smidt, Hauke14 (AUTHOR), Wagner, Martin15 (AUTHOR), Sessitsch, Angela1 (AUTHOR) angela.sessitsch@ait.ac.at
Publikováno v:
Microbial Biotechnology. Sep2024, Vol. 17 Issue 9, p1-11. 11p.