Nonspherical rigid-muffin-tin calculations of electron-phonon coupling in high- Tc perovskites

Journal Article · Sun Jul 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.366· OSTI ID:6601286

Mazin, I I; Rashkeev, S N ^[1]; Savrasov, S Y ^[2]

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1. Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstrasse 1, D-7000 Stuttgart 80 (Federal Republic of Germany)
2. P. N. Lebedev Physical Institute, Leninski Prospect 53, Moscow 117924 (U.S.S.R.)

The Hopfield factor (electronic part of the electron-phonon coupling constant) is calculated in the rigid-muffin-tin approximation (RMTA) for several perovskite high-{Tc} superconductors. Calculations were performed in the conventional spherical'' approximation and take into account the proper local symmetry. It is shown that the layered perovskite crystal symmetry generally favors strong electron-phonon interaction on the copper sites. We also estimate some non-RMTA effects.

• OSTI ID: 6601286
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:1; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL STRUCTURE
ELECTRON-PHONON COUPLING
FUNCTIONS
HIGH-TC SUPERCONDUCTORS
PEROVSKITES
PHYSICAL PROPERTIES
SPECTRAL FUNCTIONS
SUPERCONDUCTORS
SYMMETRY
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE