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|Title:||Quasiparticle Density of States of Self-irradiation-damaged PuCoGa5 Superconductor|
|Authors:||UMMARINO G. A.; MAGNANI Nicola; COLINEAU Eric; GRIVEAU Jean-Christophe; JUTIER F.; REBIZANT J.; WASTIN Franck; CACIUFFO Roberto|
|Citation:||PHYSICA B-CONDENSED MATTER vol. 404 p. 3213-3215|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|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:||Nuclear Safety and Security|
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