Superconductivity in C6Ca

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dc.creatorCalandra, Matteo
dc.creatorMauri, Francesco
dc.date2005-06-03
dc.date2005-06-04
dc.date.accessioned2026-07-07T03:05:28Z
dc.date.available2026-07-07T03:05:28Z
dc.descriptionUsing density functional theory we demonstrate that superconductivity in C6Ca is due to a phonon-mediated mechanism with electron-phonon coupling 0.83 and phonon-frequency logarithmic-average 24.7 meV. The calculated isotope exponents are 0.24 for Ca and 0.26 for C. Superconductivity is mostly due C vibrations perpendicular and Ca vibrations parallel to the graphite layers. Since the electron-phonon couplings of these modes are activated by the presence of an intercalant Fermi surface, the occurrence of superconductivity in graphite intercalated compounds requires a non complete ionization of the intercalant.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0506082
dc.identifierhttp://arxiv.org/abs/cond-mat/0506082
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26460
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titleSuperconductivity in C6Ca
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