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

Shi, Q.; Falson, J.; Zudov, M.; Kozuka, Y.; Tsukazaki, A.; Kawasaki, M.; Smet, J.

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

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Smet, J.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Research Group Solid State Nanophysics (Jurgen H. Smet), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Shi, Q., Falson, J., Zudov, M., Kozuka, Y., Tsukazaki, A., Kawasaki, M., et al. (2017). Nonlinear response of a MgZnO/ZnO heterostructure close to zero bias. Physical Review B, 96(12): 125401.

Cite as: https://hdl.handle.net/21.11116/0000-000E-D4BC-F

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.