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EnglishWe study the graphite intercalated compound CaC6 by means of Eliashberg theory.We perform an analysis of the electron-phonon coupling and define a minimal six-band anisotropic structure, which leads to a Fermi-surface dependence of the superconducting gap. A comparison of the superconducting gap structure obtained using the Eliashberg and the superconducting density functional theory is performed. We further report the anisotropic properties of the electronic spectral function, the polaronic quasiparticle branches, and their interplay with Bogoljubov excitations.
http://hdl.handle.net/11583/2497194| Titolo: | Phononic self-energy effects and superconductivity in CaC6 |
| Autori: | |
| Data di pubblicazione: | 2012 |
| Rivista: | |
| Abstract: | We study the graphite intercalated compound CaC6 by means of Eliashberg theory.We perform an analysis of the electron-phonon coupling and define a minimal six-band anisotropic structure, which leads to a Fermi-surface dependence of the superconducting gap. A comparison of the superconducting gap structure obtained using the Eliashberg and the superconducting density functional theory is performed. We further report the anisotropic properties of the electronic spectral function, the polaronic quasiparticle branches, and their interplay with Bogoljubov excitations. |
| Digital Object Identifier (DOI): | 10.1103/PhysRevB.85.184514 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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| PRB_85_184514_2012.pdf | 2. Post-print | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
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