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Физика и техника полупроводников, 2020, том 54, выпуск 8, страница 830
(Mi phts6652)
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Эта публикация цитируется в 2 научных статьях (всего в 2 статьях)
XXIV Международный симпозиум Нанофизика и наноэлектроника, Нижний Новгород, 10-13 марта 2020 г.
Effective mass and $g$-factor of two-dimensional HgTe $\Gamma_8$-band electrons: Shubnikov–de Haas oscillations
V. N. Neverova, A. S. Bogolubskiia, S. V. Gudinaa, S. M. Podgornykhab, K. V. Turutkina, M. R. Popova, N. G. Shelushininaa, M. V. Yakunina, N. N. Mikhailovc, S. A. Dvoretskyc a Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620990 Ekaterinburg, Russia
b Ural Federal University, 620002 Ekaterinburg, Russia
c Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
Аннотация:
We present a study of Shubnikov-de Haas (SdH) oscillations at temperatures of (2.2–10) K in magnetic fields up to 2.5 T in the HgCdTe/HgTe/HgCdTe heterostructure for a wide (20.3 nm) HgTe quantum well with an inverted energy band structure. The analysis of the temperature dependence of SdH amplitude in weak fields, in a region of doubly degenerate magnetoresistance peaks, led us to the value of effective electron mass $m_c/m_0$ = (0.022 $\pm$ 0.002) which is about half the theoretical estimates. But in a region of higher magnetic fields, for nondegenerate magnetoresistance peaks, we confidently have $m_c/m_0$ = (0.034 $\pm$ 0.003) in good agreement both with the theoretical estimation and with our experimental results on the analysis of activation transport under quantum Hall effect regime. The reasons for this discrepancy are discussed.
Ключевые слова:
quantum wells, mercury telluride, Shubnikov–de Haas oscillations, effective mass of charge carriers, quantum Hall effect.
Поступила в редакцию: 15.04.2020 Исправленный вариант: 21.04.2020 Принята в печать: 21.04.2020
Образец цитирования:
V. N. Neverov, A. S. Bogolubskii, S. V. Gudina, S. M. Podgornykh, K. V. Turutkin, M. R. Popov, N. G. Shelushinina, M. V. Yakunin, N. N. Mikhailov, S. A. Dvoretsky, “Effective mass and $g$-factor of two-dimensional HgTe $\Gamma_8$-band electrons: Shubnikov–de Haas oscillations”, Физика и техника полупроводников, 54:8 (2020), 830; Semiconductors, 54:8 (2020), 982–990
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/phts6652 https://www.mathnet.ru/rus/phts/v54/i8/p830
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Страница аннотации: | 34 | PDF полного текста: | 9 |
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