Author/Authors :
Robert A.J. Matthews، نويسنده , , K.V Kavokin، نويسنده , , A. Usher، نويسنده , , M.E. Portnoi، نويسنده , , M. Zhu، نويسنده , , J.D. Gething، نويسنده , , M. Elliott، نويسنده , , W.G. Herrenden-Harker، نويسنده , , K. Phillips، نويسنده , , D.A. Ritchie، نويسنده , , M.Y. Simmons، نويسنده , , C.B Sorensen، نويسنده , , O.P. Hansen، نويسنده , , O.A. Mironov، نويسنده , , M. Myronov، نويسنده , , D.R. Leadley، نويسنده , , M. Henini، نويسنده ,
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 low-mobility samples, the critical current for breakdown should decrease linearly with temperature. This prediction is verified experimentally with the addition of a low-temperature View the MathML source saturation of the critical current. It is shown that this saturation is consistent with quasi-elastic inter-Landau-level scattering when the maximum electric field in the sample reaches a large enough value.
