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| Title: | Quasiparticle density of states of self-irradiation-damaged PuCoGa5 superconductor |
| Author(s): | Ummarino, Govanni Magnani, Nicolas Colineau, Eric Griveau, Jean-Christophe Jutier, Frédéric Rebizant, Jean Wastin, Franck Caciuffo, Roberto |
| Keywords: | d-wave supeconductivity Eliashberg theory Pu-based intermetallics |
| Issue Date: | Oct-2009 |
| Publication type: | Journal article |
| Citation: | Ummarino G., Magnani N., Colineau E., Griveau J., Jutier F., Rebizant J., e.a.- Quasiparticle density of states of self-irradiation-damaged PuCoGa5 superconductor: Strongly Correlated Electron Systems 2008, Rio de Janeiro, Brazil, 17-22 August 2008.- In: Physica B: Condensed Matter, 404:19(2009), p. 3213-3215.- ISSN 0921-4526 |
| 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. |
| Persistent URL: | http://hdl.handle.net/10038/1140  |
| DOI: | doi: 10.1016/j.physb.2009.07.161 |
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