title: Effect of irradiation-induced disorder on the conductivity and critical temperature of the organic superconductor kappa-(BEDT-TTF)2Cu(SCN)2.
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 and the critical temperature T(c). We find a violation of Matthiessen's rule that can be explained by a model of 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.
authors.affiliation: Department of Physics, Clarendon Laboratory, University of Oxford, UK.
authors.forename: James G
authors.initials: JG
authors.lastname: Analytis
authors.forename: Arzhang
authors.initials: A
authors.lastname: Ardavan
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Blundell
authors.forename: Robin L
authors.initials: RL
authors.lastname: Owen
authors.forename: Elspeth F
authors.initials: EF
authors.lastname: Garman
authors.forename: Chris
authors.initials: C
authors.lastname: Jeynes
authors.forename: Ben J
authors.initials: BJ
authors.lastname: Powell