Intrinsic two-phonon-exchange mechanism of superconductivity and enhancement of Tc

Kumar, N (1974) Intrinsic two-phonon-exchange mechanism of superconductivity and enhancement of Tc. In: Physical Review B: Condensed Matter, 9 (11). pp. 4993-4995.

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Abstract

It is shown that the intrinsic two-phonon terms occurring in first order in the electron-phonon interaction Hamiltonian can give rise to (i) an essential doubling of the interaction phase space (BCS cutoff) and (ii) an attractive pairing interaction proportional to the phonon occupation numbers. This suggests a possible enhancement of the superconductive transition temperature in the presence of high-frequency acoustic field.

Item Type:	Journal Article
Publication:	Physical Review B: Condensed Matter
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	18 Dec 2009 06:45
Last Modified:	19 Sep 2010 05:47
URI:	http://eprints.iisc.ac.in/id/eprint/23845

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