Highly anisotropic commensurability oscillations in two-dimensional holes at the GaAs/AlGaAs (311)A interface

Jeng-Bang Yau; Jeng-Ping Lu; Harindran C. Manoharan; Mansour Shayegan

doi:10.1016/S1386-9477(99)00209-X

Highly anisotropic commensurability oscillations in two-dimensional holes at the GaAs/AlGaAs (311)A interface

Mesoscale and Nanoscale Physics 2009-10-31 v1

Authors: Jeng-Bang Yau , Jeng-Ping Lu , Harindran C. Manoharan , Mansour Shayegan

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Abstract

Measurements of commensurability oscillations in GaAs/AlGaAs two-dimensional (2D) hole systems grown on GaAs (311)A substrates reveal a remarkable anisotropy: the amplitude of the measured commensurability oscillations along the [ $\bar{2}$ 33] direction is about 100 times larger than along [01 $\bar{1}$ ]. For 2D electron systems at similar interfaces, however, we observe nearly isotropic oscillations, suggesting that the anomalous anisotropy is intrinsic to GaAs 2D holes at the (311)A interface.

Keywords

commensurability oscillations 2D holes GaAs/AlGaAs interface anisotropy 311A orientation

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@article{arxiv.cond-mat/0009363,
  title  = {Highly anisotropic commensurability oscillations in two-dimensional holes at the GaAs/AlGaAs (311)A interface},
  author = {Jeng-Bang Yau and Jeng-Ping Lu and Harindran C. Manoharan and Mansour Shayegan},
  journal= {arXiv preprint arXiv:cond-mat/0009363},
  year   = {2009}
}

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3 pages, 4 figures, presented at the 13th International Conference of the Electronic Properties of Two-Dimensional Systems

Highly anisotropic commensurability oscillations in two-dimensional holes at the GaAs/AlGaAs (311)A interface

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