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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2006     Display Documents



  history
ID: 273534.0, MPI für Festkörperforschung / FKF Publikationen 2006
Electron-phonon superconductivity in hole-doped diamond: A first-principles study
Authors:Boeri, L.; Kortus, J.; Andersen, O. K.
Language:English
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Journal of Physics and Chemistry of Solids
Volume:67
Issue / Number:1-3
Start Page:552
End Page:556
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:In this work we propose that the observed superconductivity in
hole-doped diamond is due to an electron-phonon mechanism and
substantiate the idea by first-principles full potential LMTO
linear-response calculations. Our calculations, based on the virtual
crystal approximation (VCA), show that the holes at the top of the
zone-centered, degenerate sigma bonding valence band couple strongly to
the optical bond-stretching modes, in a very similar way as found in
MgB2. We discuss the main similarities and differences between the two
systems, as well as the doping dependence of T-c in diamond and the
possibility of observing superconductivity in Si and Ge. (c) 2005
Elsevier Ltd. All rights reserved.
Free Keywords:superconductors; ab initio calculations; electronic structure; lattice
dynamics; phonons
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Festkörperforschung
External Affiliations:Univ Roma La Sapienza, INFM, Ctr Stat Mech & Complex, I-00185 Rome, Italy.
; Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
Identifiers:ISI:000236746600137 [ID No:1]
ISSN:0022-3697 [ID No:2]
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