A Caltech Library Service

Electron correlation and disorder in Hg_(1-x)Cd_xTe in a magnetic field

Field, Stuart B. and Reich, D. H. and Rosenbaum, T. F. and Littlewood, P. B. and Nelson, D. A. (1988) Electron correlation and disorder in Hg_(1-x)Cd_xTe in a magnetic field. Physical Review B, 38 (3). pp. 1856-1864. ISSN 1098-0121. doi:10.1103/PhysRevB.38.1856.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


We report both linear and nonlinear magnetoconductance measurements on two different density samples of similar stoichiometry Hg_(1-x)Cd_xTe for 0.01<T<2.5 K and 0<H<80 kOe. The critical magnetic field for driving the samples through the metal-insulator transition is proportional to temperature at low T and saturates at T∼2 K, in quantitative agreement with a theory for the melting of a Wigner crystal in magnetic field. In the insulating state, we observe a non-Ohmic I-V characteristic at threshold electric fields less than 1 mV/cm. By analogy to theories for charge-density-wave depinning, we estimate that the electrons are correlated over regions of a few hundred lattice spacings. Finally, we map out the phase boundary between the low-T–high-H electron solid and the high-T–low-H correlated fluid, explicitly demonstrating the necessity of millikelvin temperatures for studying the relative roles of disorder and Coulomb interactions in the electron solid.

Item Type:Article
Related URLs:
URLURL TypeDescription
Alternate Title:Electron correlation and disorder in Hg1-xCdxTe in a magnetic field
Additional Information:© 1988 The American Physical Society. Received 6 October 1987. The work at The University of Chicago was supported by the National Science Foundation under Grant No. DMR85-17478. One of us (T.F.R) acknowledges support from the Alfred P. Sloan Foundation.
Funding AgencyGrant Number
Alfred P. Sloan FoundationUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20140707-163039401
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47029
Deposited By: George Porter
Deposited On:09 Jul 2014 16:43
Last Modified:10 Nov 2021 17:33

Repository Staff Only: item control page