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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2009, Volume 90, Issue 5, Pages 389–392
(Mi jetpl525)
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This article is cited in 3 scientific papers (total in 3 papers)
CONDENSED MATTER
Calculation of the anisotropic mobility in (110) AlAs quantum wells at zero temperature
V. S. Khrapaiab, A. Golda a Centre d`Elaboration de Mat'eriaux et d`Etudes Structurales (CEMES-CNRS), 31055 Toulouse, France
b Institute of Solid State Physics, Russian Academy of Sciences
Abstract:
We calculate the mobility of the two-dimensional electron gas as realized in (110) AlAs quantum wells at zero temperature. In this structure the mass is strongly anisotropic which gives rise to an anisotropic mobility. By using a theoretical approach developed by Tokura [Phys. Rev. B 58, 7151 (1998)] we numerically calculate the anisotropic mobility. We study impurity scattering in quantum wells having an ellipsoidal Fermi surface. We find that increasing the electron density and/or the well width results in reduction of the anisotropy of the mobility while the anisotropy in the scattering time is increased. A strong dependence of the mobility anisotropy on the impurity position is predicted. Excellent agreement with a recently published experimental result is found under the assumption that impurities are located at the edge of the quantum well.
Received: 16.07.2009
Citation:
V. S. Khrapai, A. Gold, “Calculation of the anisotropic mobility in (110) AlAs quantum wells at zero temperature”, Pis'ma v Zh. Èksper. Teoret. Fiz., 90:5 (2009), 389–392; JETP Letters, 90:5 (2009), 346–349
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https://www.mathnet.ru/eng/jetpl525 https://www.mathnet.ru/eng/jetpl/v90/i5/p389
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Abstract page: | 180 | Full-text PDF : | 65 | References: | 35 |
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