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- Title
Nonlinear magnetotransport in a two-dimensional electron system with anisotropic mobility.
- Authors
Bykov, A.; Goran, A.; Mayer, W.; Vitkalov, S.
- 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 though Hall bars oriented along the [110] direction, the transition of the two-dimensional system to the state with differential resistance r ≈ 0 in a magnetic field occurs at a lower value of I and is accompanied by a more pronounced 'plunge' into the region of negative r 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.
- Subjects
NONLINEAR magnetics devices; MAGNETIC transitions; TWO-dimensional electron gas; ANISOTROPY; GALLIUM arsenide; HETEROSTRUCTURES
- Publication
JETP Letters, 2014, Vol 98, Issue 11, p717
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364013240053