TY - JOUR

T1 - Quasiparticle density of states of self-irradiation-damaged PuCoGa5 superconductor

AU - Ummarino, Govanni

AU - Magnani, Nicolas

AU - Colineau, Eric

AU - Griveau, Jean-Christophe

AU - Jutier, Frédéric

AU - Rebizant, Jean

AU - Wastin, Franck

AU - Caciuffo, Roberto

N1 - Score = 10

PY - 2009/10

Y1 - 2009/10

N2 - 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.

AB - 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.

KW - d-wave supeconductivity

KW - Eliashberg theory

KW - Pu-based intermetallics

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_99775

UR - http://knowledgecentre.sckcen.be/so2/bibref/6022

U2 - 10.1016/j.physb.2009.07.161

DO - 10.1016/j.physb.2009.07.161

M3 - Article

SN - 0921-4526

VL - 404

SP - 3213

EP - 3215

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 19

T2 - Strongly Correlated Electron Systems 2008

Y2 - 17 August 2008 through 22 August 2008

ER -