Phenomenological aspects of phase fluctuation in high Tc superconductors: Cooper pair droplets

Chakraverty, BK and Ramakrishnan, TV (1997) Phenomenological aspects of phase fluctuation in high Tc superconductors: Cooper pair droplets. In: Physica C: Superconductivity, 282 (part 1). pp. 290-293.

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Abstract

We point out how fluctuation of the phase of the superconducting order parameter can play a key role in our understanding of high Te superconductors. A simple universal criterion is given which illustrates why all oxide superconductors in contrast to classical superconductors ought to behave as a lattice of cooper pairs. T-c is to be thought of as the temperature of phase coherence or the temperature above which the lattice of Cooperpair 'melts' into a phase of Cooper-pair droplets that starts forming at T approximate to T-* . This is the pseudo-gap region. Quantum fluctuation of the phase predicts a superconductor to insulator phase transition for all underdoped materials.

Item Type:	Journal Article
Publication:	Physica C: Superconductivity
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	30 Jun 2011 14:22
Last Modified:	30 Jun 2011 14:22
URI:	http://eprints.iisc.ac.in/id/eprint/38352

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