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Temperature-dependent phase reversal of nonresonant microwave and rf absorption in high-$T_c$ superconductors

Bhat, SV and Srinivasu, VV (1991) Temperature-dependent phase reversal of nonresonant microwave and rf absorption in high-$T_c$ superconductors. In: Physical Review B, 44 (18). pp. 10121-10125.

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Abstract

The phenomenon of temperature-dependent phase reversal of the nonresonant electromagnetic response of the high-$T_c$ superconductors is studied in the rf and the microwave ranges. Phase reversal is the changeover from a maximum at zero magnetic field and the decrease with the increasing field to a minimum at zero field and the increase with the increasing field. The results are analyzed using an effective-medium theory, treating the sample as a percolating network consisting of the superconducting regions separated by normal metallic regions. The experimental observations are shown to follow naturally from the dependence of the superconducting fraction on the temperature and the magnetic field.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The American Physical Society.
Keywords: Bismuth compounds;Calcium compounds;Electromagnetic wave absorption;High-temperature superconductors;Strontium compounds
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 19 Feb 2007
Last Modified: 19 Sep 2010 04:32
URI: http://eprints.iisc.ernet.in/id/eprint/8762

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