Title: Quasiparticle Density of States of Self-irradiation-damaged PuCoGa5 Superconductor
Authors: UMMARINO G. A.MAGNANI NicolaCOLINEAU EricGRIVEAU Jean-ChristopheJUTIER F.REBIZANT J.WASTIN FranckCACIUFFO Roberto
Citation: PHYSICA B-CONDENSED MATTER vol. 404 p. 3213-3215
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2009
JRC N°: JRC54527
ISSN: 0921-4526
URI: www.elsevier.com/locate/physb
http://publications.jrc.ec.europa.eu/repository/handle/JRC54527
DOI: 10.1016/j.physb.2009.07.161
Type: Articles in Journals
Abstract: The physical properties of the unconventional PuCoGa5 superconductor are analysed in the framework of the d-wave Eliashberg theory, assuming phonon-mediated Cooper pairing. The solutions of the Eliashberg equations in the imaginary axis representation provide a time variation of the critical temperature inagreement with experimental findings collected over a time period of almost five years. The real-axis formulation has then been used to calculate the temperature dependence of a number of observables (quasiparticle density of states, local spin susceptibility, spin¿lattice relaxation rate), which compare very favourably with experiments. The normal state resistivity can also be reproduced within a two-band model up to room temperature. Finally, the energy dependence of the Cooper-pair quasi particle density of state at T ¼ 4 K is calculated for several values of the impurity scattering rate.
JRC Institute:Institute for Transuranium Elements

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