Multiband and impurity effects in infrared and optical spectra of MgB2
arXiv:cond-mat/0702189 · doi:10.1016/j.physc.2007.02.008
Abstract
A short review of the optical and far-infrared measurements on MgB is given. Multiband and multigap effects are analyzed by comparing optical properties with other experiments and {\em ab initio} calculations. The covered topics are: the plasma frequency, electron-phonon interaction, impurity scattering, the effects of C and Al substitution, interband transitions and the far-infrared signatures of the superconducting gaps.
For the Special Physica C Issue on MgB2 (2007), 11 pages, 12 figures