Anomalous isotope effects of fulleride superconductors

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dc.creatorFan, W.
dc.date2008-11-24
dc.date.accessioned2026-07-07T10:20:37Z
dc.date.available2026-07-07T10:20:37Z
dc.descriptionThe numerical calculations of the standard Eliashberg-Nambu strong coupling theory and a formula of isotope effect derived in this paper provide direct evidences that an-harmonic vibrations of lattice enhance isotope effect with anomalous coefficient $α>1/2$. The results in this paper explain very well the wide distributed $α$ values for the samples with different ratios of substitutions of $^{12}$C by $^{13}$C of fulleride superconductor Rb$_{3}$C$_{60}$. The calculations of isotope effects indicate that the intra-molecule radial modes have more important contributions to superconductivity than the intra-molecule tangential modes with higher phonon frequencies
dc.descriptionAccepted by International of Modern Physics B (13pages, 2eps figure)
dc.identifierhttps://arxiv.org/abs/0811.3813
dc.identifierhttp://arxiv.org/abs/0811.3813
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/174908
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titleAnomalous isotope effects of fulleride superconductors
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