Quasiparticle density of states of self-irradiation-damaged PuCoGa5 superconductor

Research output: Contribution to journalArticle

Authors

  • Govanni Ummarino
  • Nicolas Magnani
  • Eric Colineau
  • Jean-Christophe Griveau
  • Frédéric Jutier
  • Jean Rebizant
  • Franck Wastin
  • Roberto Caciuffo

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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 thecritical temperature in agreementwith experimental findings collected over atime period of almost fiveyears. The real-axis formulation has then been used tocalculate 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 theCooper-pair quasiparticle density of state at T = 4 K is calculated for several values of the impurity scattering rate.

Details

Original languageEnglish
Pages (from-to)3213-3215
JournalPhysica B: Condensed Matter
Volume404
Issue number19
DOIs
Publication statusPublished - Oct 2009
EventStrongly Correlated Electron Systems 2008 - Rio de Janeiro, Brazil
Duration: 17 Aug 200822 Aug 2008

Keywords

  • d-wave supeconductivity, Eliashberg theory, Pu-based intermetallics

ID: 156454