Ab initio calculations of the physical properties of transition metal carbides and nitrides and possible routes to high-Tc superconductivity
- Cite this article as:
- Maksimov, E.G., Ebert, S.V., Magnitskaya, M.V. et al. J. Exp. Theor. Phys. (2007) 105: 642. doi:10.1134/S1063776107090221
We report ab initio linear-response calculations of the phonon spectra and the electron-phonon interaction for several transition metal carbides and nitrides in a NaCl-type structure. For NbC, the kinetic, optical, and superconducting properties are calculated in detail at various pressures and the normal-pressure results are found to agree well with the experiment. Factors accounting for the relatively low critical temperatures Tc in transition metal compounds with light elements are considered and the possible ways of increasing Tc are discussed.