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Nonlinear magnetotransport in a two-dimensional electron system with anisotropic mobility

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Abstract

Nonlinear magnetotransport of two-dimensional electrons in modulation-doped GaAs/AlAs heterostructures with anisotropic mobility is investigated. The mobility attains its maximum and minimum values in the \(\left[ {1\bar 10} \right]\) and [110] directions, respectively. It is found that, upon an increase in the direct electrical current I dc though Hall bars oriented along the [110] direction, the transition of the two-dimensional system to the state with differential resistance r xx ≈ 0 in a magnetic field occurs at a lower value of I dc and is accompanied by a more pronounced “plunge” into the region of negative r xx values as compared to bars oriented along the \(\left[ {1\bar 10} \right]\) direction. The results are explained by the impact of mobility on the spectral diffusion of nonequilibrium charge carriers.

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Authors and Affiliations

  1. Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    A. A. Bykov & A. V. Goran

  2. Novosibirsk State Technical University, Novosibirsk, 630092, Russia

    A. A. Bykov

  3. Physics Department, City College of the City University of New York, New York, NY, 10031, USA

    W. Mayer & S. A. Vitkalov

Authors
  1. A. A. Bykov
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  2. A. V. Goran
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  3. W. Mayer
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  4. S. A. Vitkalov
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Correspondence to A. A. Bykov.

Additional information

Original Russian Text © A.A. Bykov, A.V. Goran, W. Mayer, S.A. Vitkalov, 2013, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2013, Vol. 98, No. 11, pp. 811–815.

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Bykov, A.A., Goran, A.V., Mayer, W. et al. Nonlinear magnetotransport in a two-dimensional electron system with anisotropic mobility. Jetp Lett. 98, 717–721 (2014). https://doi.org/10.1134/S0021364013240053

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  • DOI: https://doi.org/10.1134/S0021364013240053

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