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Insulating phase of a disordered system: Fermi glass versus electron glass

Bhatt, RN and Ramakrishnan, TV (1984) Insulating phase of a disordered system: Fermi glass versus electron glass. In: Journal of physics c-solid state physics, 17 (24). L639-L643.

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The authors examine the critical divergence of the low-frequency conductivity of the noninteracting Fermi glass and interacting electron glass models of the insulating phase of a disordered system as the metallic phase is approached. Results for the two are found to be rather different, which can be tested experimentally. In particular, for the electron glass, there exists a nonvanishing contribution to the dielectric constants from the low-frequency (hopping) conductivity even at low temperatures, which scales with the high-frequency (optical) contribution, and diverges with the same exponent at the insulator-metal transition.

Item Type: Journal Article
Publication: Journal of physics c-solid state physics
Publisher: Institute of Physics
Additional Information: Copyright for this article belongs to Institute of Physics.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 25 Aug 2009 11:35
Last Modified: 19 Sep 2010 05:41
URI: http://eprints.iisc.ac.in/id/eprint/22237

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