Voltage-probe-controlled breakdown of the quantum Hall effect
- 15 May 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 43 (14) , 12118-12121
- https://doi.org/10.1103/physrevb.43.12118
Abstract
We have observed that the breakdown of the quantum Hall effect in a narrow channel at high current densities can be controlled by adjusting the transmission probabilities of voltage probes at the high electrochemical-potential edge of the channel, even though contacts outside the channel are used for the measurement. We find that breakdown occurs predominantly by backscattering within the uppermost occupied Landau level.Keywords
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