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Temperature dependence of the breakdown of the quantum Hall effect studied by induced currents
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UNSPECIFIED. (2004) Temperature dependence of the breakdown of the quantum Hall effect studied by induced currents. PHYSICAL REVIEW B, 70 (7). -. ISSN 1098-0121
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Official URL: http://dx.doi.org/10.1103/PhysRevB.70.075317
Abstract
We have developed a model of the high-current breakdown of the integer quantum Hall effect, as measured in contactless experiments using a highly-sensitive torsion balance magnetometer. The model predicts that, for empirically "low-mobility" samples (mu<75 m(2) V-1 s(-1)), the critical current for breakdown should decrease with, and have a linear dependence on, temperature. This prediction is verified experimentally with the addition of a low-temperature saturation of the critical current at a temperature that depends on both sample number density and filling factor. It is shown that this saturation is consistent with quasielastic inter-Landau-level scattering when the maximum electric field in the sample reaches a large enough value. In addition we show how this model can be extended to give qualitative agreement with experiments on high-mobility samples.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Journal or Publication Title: | PHYSICAL REVIEW B |
| Publisher: | AMERICAN PHYSICAL SOC |
| ISSN: | 1098-0121 |
| Date: | August 2004 |
| Volume: | 70 |
| Number: | 7 |
| Number of Pages: | 8 |
| Page Range: | - |
| Identification Number: | 10.1103/PhysRevB.70.075317 |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/8070 |
Data sourced from Thomson Reuters' Web of Knowledge
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