Eur. Phys. J. B 34, 63-67 (2003)
https://doi.org/10.1140/epjb/e2003-00197-0

Electron-phonon interaction in carbon clathrate hex-C₄₀

Dipartimento di Scienza dei Materiali and Istituto Nazionale per la Fisica della Materia, Università degli Studi di Milano-Bicocca, Via Cozzi 53, 20125 Milano, Italy

Corresponding author: ^a marco.bernasconi@unimib.it

Received: 21 March 2003
Published online: 23 July 2003

Abstract

The electron-phonon interaction in Li-doped carbon clathrates hex-LiC₄₀ and hex-Li₂C₄₀ has been investigated from first principles. Although the characteristic phonon frequency and electron-phonon interaction are large, the electronic density of states is relatively low which finally gives an electron-phonon coupling constant for Li₂C₄₀. Hole-doping is expected to provide higher T_c than n-doping in hex-C₄₀.