2004/07/22 by Xavier Blase, Ch Adessi, Damien Connetable · 1 citation
Physics and Astronomy · #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.93.237004
arxiv created 2004/07/22 · arxiv updated 2009/12/01
We present an \it ab initio study of the recently discovered superconductivity of boron doped diamond within the framework of a phonon-mediated pairing mechanism. The role of the dopant, in substitutional position, is unconventional in that half of the coupling parameter λ originates in strongly localized defect-related vibrational modes, yielding a very peaked Eliashberg α2F(ω) function. The electron-phonon coupling potential is found to be extremely large and TC is limited by the low value of the density of states at the Fermi level.