Scattering anisotropy in HgTe (013) quantum well

D. A. Khudaiberdiev, M. L. Savchenko, D. A. Kozlov, N. N. Mikhailov, Z. D. Kvon

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

We report on a detailed experimental study of the electron transport anisotropy in HgTe (013) quantum well of 22 nm width in the directions [100] and [03 1 ¯] as the electron density function n. The anisotropy is absent at the minimal electron density near a charge neutrality point. The anisotropy increases with the increase in n and reaches about 10% when the Fermi level is within the first subband H1. There is a sharp increase in the anisotropy (up to 60%) when the Fermi level reaches the second subband E2. We conclude that the first effect is due to the small intra-subband anisotropic interface roughness scattering, and the second one is due to the strongly anisotropic inter-subband roughness scattering, but the microscopical reason for such a strong change in the anisotropy remains unknown.

Язык оригиналаанглийский
Номер статьи083101
ЖурналApplied Physics Letters
Том121
Номер выпуска8
DOI
СостояниеОпубликовано - 22 авг. 2022

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