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Effect of irradiation-induced disorder on the conductivity and critical temperature of the organic superconductor kappa-(BEDT-TTF)(2)Cu(SCN)(2)

Analytis, JG, Ardavan, A, Blundell, SJ, Owen, RL, Garman, EF, Jeynes, C and Powell, BJ (2006) Effect of irradiation-induced disorder on the conductivity and critical temperature of the organic superconductor kappa-(BEDT-TTF)(2)Cu(SCN)(2) PHYSICAL REVIEW LETTERS, 96 (17). ? - ?. ISSN 0031-9007

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Abstract

We have introduced defects into clean samples of the organic superconductor kappa-(BEDT- TTF)(2)Cu(SCN)(2) in order to determine their effect on the temperature dependence of the interlayer conductivity sigma and the critical temperature T-c. We find a violation of Matthiessen's rule that can be explained by a model of sigma involving a defect-assisted interlayer channel which acts in parallel with the bandlike conductivity. We observe an unusual dependence of T-c on residual resistivity, inconsistent with the generalized Abrikosov-Gor'kov theory for an order parameter with a single component, providing an important constraint on models of the superconductivity in this material.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, IMPURITIES, DAMAGE, MODEL
Related URLs:
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Ion Beam Centre
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27
URI: http://epubs.surrey.ac.uk/id/eprint/339

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