An unexpected conducting phase in two dimensions

M.P. Sarachik, S.V. Kravchenko, D. Simonian and V.M. Pudalov

Physica A: Statistical Mechanics and its Applications, 1999, vol. 263, issue 1, 208-214

Abstract: Within the scaling theory of localization for noninteracting electrons, all two dimensional systems are insulating in the absence of a magnetic field when examined at sufficiently large length scales, or in the limit of zero temperature. Contrary to this two-decades-old expectation, recent experiments have shown there exists a conducting phase at low temperatures for low electron (hole) densities, a regime where electron-electron interaction energies are large compared to the Fermi energy. We briefly review experiments in silicon MOSFETs that provide evidence of an apparent conductor-insulator transition in two dimensions.

Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:263:y:1999:i:1:p:208-214

DOI: 10.1016/S0378-4371(98)00530-5

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