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 lambda=0.46 for Li2C40. Hole-doping is expected to provide higher T-c than n-doping in hex-C-40.
Spagnolatti, I., Bernasconi, M., Benedek, G. (2003). Electron-phonon interaction in carbon clathrate hex-C-40. THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, 34(1), 63-67 [10.1140/epjb/e2003-00197-0].
Electron-phonon interaction in carbon clathrate hex-C-40
Bernasconi, M;Benedek, G.
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 lambda=0.46 for Li2C40. Hole-doping is expected to provide higher T-c than n-doping in hex-C-40.File in questo prodotto:
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