Electron-phonon interactions and related physical properties of metals from linear-response theory

Article

关键词: BRILLOUIN-ZONE INTEGRATIONS;    TETRAHEDRON METHOD;    MASS ENHANCEMENT;    NB;    SUPERCONDUCTORS;    SPECTROSCOPY;    LINEWIDTHS;    PD;   

DOI  :  10.1103/PhysRevB.54.16487

来源: SCIE

【 摘 要 】

Spectral distribution functions of electron-phonon interaction alpha(2)F(omega) obtained by ab initio linear-response calculations are used to describe various superconducting and transport properties in a number of elemental metals such as Al, Cu, Mo, Nb, Pb, Pd, Ta, and V. Their lattice dynamics and self-consistently screened electron-phonon coupling are evaluated within local density functional theory and using a linear-muffin-tin-orbital basis set. We compare our theoretical alpha(2)F(omega) with those deduced from the tunneling measurements and find a close agreement between them. Temperature-dependent electrical and thermal resistivities as well as transport constants lambda(tr) also agree well with the experimental data. The values of lambda(tr) are close to the electron-phonon coupling parameter X. For the latter a very good agreement with specific-heat measurements was found without any paramagnon contribution, except in Pd. We conclude that our method provides the description of electron-phonon interactions in tested materials with an accuracy of 10%.

【 授权许可】

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