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MICROWAVE RESONANCE STUDY OF MELTING IN HIGH MAGNETIC FIELD WIGNER SOLID

NHMFL 1800 East Paul Dirac Drive Tallahassee, FL 32310, USA

Electrical Engineering Department, Princeton University, Princeton, NJ 08544, USA

Present address: The Richard E. Smalley Institute for Nanoscale Science and Technology and Department of Physics, Rice University, Houston, TX 77005.

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G. SAMBANDAMURTHY

NHMFL 1800 East Paul Dirac Drive Tallahassee, FL 32310, USA

Electrical Engineering Department, Princeton University, Princeton, NJ 08544, USA

Present address: Physics Department, University at Buffalo-SUNY Buffalo, NY 14260, USA.

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L. W. ENGEL

NHMFL 1800 East Paul Dirac Drive Tallahassee, FL 32310, USA

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D. C. TSUI

Electrical Engineering Department, Princeton University, Princeton, NJ 08544, USA

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L. N. PFEIFFER

Bell Laboratories, Murray Hill, New Jersey 07974, USA

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, and

K. W. WEST

Bell Laboratories, Murray Hill, New Jersey 07974, USA

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https://doi.org/10.1142/S0217979207042860Cited by:4 (Source: Crossref)

Abstract

Wigner solids in two-dimensional electron systems in high magnetic field B exhibit a striking, microwave or rf resonance, that is understood as a pinning mode. The temperature, T_m, above which the resonance is absent, is interpreted as the melting temperature of the solid. Studies of T_m for many B and many sample densities n show that T_m is a function of the Landau level filling ν alone for a given sample. This indicates that quantum mechanics figures importantly in the melting. T_m also appears to be increased by larger sample disorder.

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