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Observation of narrow-band noise accompanying the breakdown of insulating states in high Landau levels

Cooper, K. B. and Eisenstein, J. P. and Pfeiffer, L. N. and West, K. W. (2003) Observation of narrow-band noise accompanying the breakdown of insulating states in high Landau levels. Physical Review Letters, 90 (22). Art. No. 226803. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:COOprl03

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Abstract

Recent magnetotransport experiments on high mobility two-dimensional electron systems have revealed many-body electron states unique to high Landau levels. Among these are reentrant integer quantum Hall states which undergo sharp transitions to conduction above some threshold field. Here we report that these transitions are often accompanied by narrow- and broad-band noise with frequencies which are strongly dependent on the magnitude of the applied dc current.


Item Type:Article
Additional Information:©2003 The American Physical Society. Received 7 October 2002; published 3 June 2003. We thank V. Oganesyan, S. Brown, and R. Thorne for useful discussions and M. P. Lilly for his work on the early stages of this experiment. This work was supported by the DOE under Grant No. DE-FG03-99ER45766 and the NSF under Grant No. DMR0070890.
Subject Keywords:noise; quantum Hall effect; Landau levels; two-dimensional electron gas; semiconductor quantum wells
Record Number:CaltechAUTHORS:COOprl03
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:COOprl03
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.90.226803
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3010
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:11 May 2006
Last Modified:26 Dec 2012 08:52

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