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arXiv · 1708.09841

Nonlinear response of a MgZnO/ZnO heterostructure close to zero bias

Q. Shi·M. A. Zudov·J. Falson·Y. Kozuka·A. Tsukazaki·M. Kawasaki·J. Smet
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Abstract

We report on magnetotransport properties of a MgZnO/ZnO heterostructure subjected to weak direct currents. We find that in the regime of overlapping Landau levels, the differential resistivity acquires a quantum correction proportional to both the square of the current and the Dingle factor. The analysis shows that the correction to the differential resistivity is dominated by a current-induced modification of the electron distribution function and allows us to access both quantum and inelastic scattering rates.

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Q. Shi, M. A. Zudov, J. Falson, Y. Kozuka, A. Tsukazaki, M. Kawasaki, J. Smet. 2017-08-31. Nonlinear response of a MgZnO/ZnO heterostructure close to zero bias. https://doi.org/10.1103/physrevb.96.125401

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