Autor: Maude, D. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Electron-Electron Interaction Effects in Quantum Hall Regime of GaN/AlGaN Heterostructures
Autorzy:: Siekacz, M.
Dybko, K.
Maude, D.
Potemski, M.
Knap, W.
Skierbiszewski, C.
Powiązania:: https://bibliotekanauki.pl/articles/2047676.pdf
Data publikacji:: 2007-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.30.+h
73.40.-c
73.43.Qt
Opis:: We measured the activation of resistivity at quantum Hall minima in high mobility two-dimensional electron gas confined at AlGaN/GaN interface. The effective g-factor and effective mass was deduced. The electron-electron interactions modify both quantities compared to their bare band values. It is found that the influence of interactions is much more pronounced onto g-factor than effective mass. The relative spin susceptibility was also calculated and compared with available theories. The best agreement was found with the ideal two-dimensional gas model in random phase approximation.
Źródło:: Acta Physica Polonica A; 2007, 112, 2; 269-273
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Combined Exciton-Cyclotron Resonance in Photoluminescence of a Two-Dimensional Hole Gas
Autorzy:: Jadczak, J.
Bryja, L.
Płochocka, P.
Wójs, A.
Misiewicz, J.
Maude, D.
Potemski, M.
Powiązania:: https://bibliotekanauki.pl/articles/1791299.pdf
Data publikacji:: 2009-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.20.Mf
71.35.Ji
71.35.Pq
78.20.Ls
Opis:: A two-dimensional hole gas in an asymmetric GaAs/$Ga_{1-x}Al_{x}As$ quantum well is studied by polarization-resolved photoluminescence in high magnetic fields (up to B = 20 T) and at low temperatures (down to T = 50 mK). In addition to the previously reported dominant emission channels of various free and acceptor-bound trions, the high-energy hole cyclotron replicas of the bound states are now also observed, corresponding to the combined exciton-cyclotron resonance. Identification of different transitions in the rich, multi-peak spectra was possible by the analysis of optical selection rules and comparison of the experimental spectra with realistic numerical calculations.
Źródło:: Acta Physica Polonica A; 2009, 116, 5; 852-853
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Breakdown of the Quantum Hall Effect
Autorzy:: Maude, D. K.
Rigal, L. B.
Desrat, W.
Potemski, M.
Portal, J. C.
Eaves, L.
Wasilewski, Z. R.
Toropov, A. I.
Hill, G.
Powiązania:: https://bibliotekanauki.pl/articles/2027467.pdf
Data publikacji:: 2001-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.10.Pm
74.25.Dw
Opis:: The breakdown of the dissipationless conductance in the integer and fractional quantum Hall effect regime is reviewed. The temperature dependence of the critical current and of the critical magnetic field at breakdown bears a striking resemblance to the phase diagram of the phenomenological two-fluid Gorter-Casimir model for superconductivity. In addition, a remarkably simple scaling law exists between different filling factors.
Źródło:: Acta Physica Polonica A; 2001, 100, 2; 213-226
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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