Electrons and Phonons in YbC6
| dc.creator | Mazin, I. I. | |
| dc.creator | Molodtsov, S. L. | |
| dc.date | 2005-03-28 | |
| dc.date.accessioned | 2026-07-07T03:04:19Z | |
| dc.date.available | 2026-07-07T03:04:19Z | |
| dc.description | The electronic structure and selected zone-center phonons in Yb graphite intercalation compound (YbC6) are investigated {theoretically} using density functional calculations and LDA+U approximation for Coulomb correlations in the f shell, and experimentally using angle-resolved photoemission. We find that both in LDA and LDA+U approach the Yb f states are fully occupied providing no evidence for mixed-valent behavior. The obtained theoretical results are in good agreement with photoemission experiments. The 4f states are considerably hybridized both with the Yb 5d and C 2p states resulting in a substantial admixture of Yb f at the Fermi level. Soft Yb phonons, given a noticeable presence of the Yb states at the Fermi level, are probably responsible for the superconductivity recently reported in YbC6. | |
| dc.description | For consistency, we post without any changes the manuscript as submitted to PRB on 3/17/2005; however, in meanwhile the key Ref.6 has been made available by the authors as cond-mat/0503570 and will be referred to as such in the future versions | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0503650 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0503650 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/26093 | |
| dc.subject | Superconductivity | |
| dc.subject | Materials Science | |
| dc.title | Electrons and Phonons in YbC6 | |
| dc.type | text |