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.|
|Date of Publication (YYYY-MM-DD):||2006|
|Title of Journal:||Journal of Physics and Chemistry of Solids|
|Issue / Number:||1-3|
|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
|External Publication Status:||published|
|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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