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Evidence for depinning of a Wigner crystal in Hg-Cd-Te

Field, Stuart B. and Reich, D. H. and Shivaram, B. S. and Rosenbaum, T. F. and Nelson, D. A. and Littlewood, P. B. (1986) Evidence for depinning of a Wigner crystal in Hg-Cd-Te. Physical Review B, 33 (7). pp. 5082-5085. ISSN 1098-0121. https://resolver.caltech.edu/CaltechAUTHORS:20140707-163040434

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Abstract

We report measurements of the nonlinear current-voltage characteristics on low-carrier-concentration n-type samples of Hg_(0.76)Cd_(0.24)Te at high magnetic fields and low temperatures. We find the onset of nonlinear conductivity occurs at applied electric fields of less than 1 mV/cm. The effect can be easily distinguished from sample heating and is consistent with collective transport produced by the sliding of a Wigner crystal pinned by disorder. We estimate a disorder-induced correlation length of tens of micrometers.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevB.33.5082DOIArticle
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.33.5082PublisherArticle
Additional Information:© 1986 The American Physical Society. Received 15 April 1985; revised manuscript received 18 July 1985. We would like to thank R. M. Fleming, A. Libchaber, S. R. Nagel, G. A. Thomas, and C. M. Varma for helpful discussions. The work at the University of Chicago was supported by the National Science Foundation (NSF) under Grant No. DMR-83-05065. D.H.R. received support from NSF Grant No. DMR-83-51992. T.F.R. would also like to thank the Alfred P. Sloan Foundation for financial assistance.
Funders:
Funding AgencyGrant Number
NSFDMR-83-05065
NSFDMR-83-51992
Alfred P. Sloan FoundationUNSPECIFIED
Issue or Number:7
Record Number:CaltechAUTHORS:20140707-163040434
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140707-163040434
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47037
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 Jul 2014 14:21
Last Modified:03 Oct 2019 06:49

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