Published February 1993
| Version v1
Journal article
Enhancement of Tc in BCS theory extended by interband two-phonon exchange
Creators
- 1. Max-Planck-Inst. fuer Festkoerperforschung, Stuttgart (Germany)
- 2. Los Alamos National Lab., Los Alamos, NM (United States). Theoretical Div.
Description
Band crossing and hybridization effects on superconductivity are investigated within a weak coupling limit of an extended BCS theory. Two-phonon modiated attractive two-band (p-d) interactions induce anisotropic coupled energy gaps, enhancement of the transition temperature Tc, and a material-dependent isotope effect. The individual gap to kB Tc usual value. Effects on ultrasonic attenuation and coherence lengths are briefly discussed. (orig.)
Additional details
Publishing Information
- Journal Title
- Zeitschrift fuer Physik. B, Condensed Matter
- Journal Volume
- 90
- Journal Issue
- 2
- Journal Page Range
- p. 183-186.
- ISSN
- 0722-3277
- CODEN
- ZPCMDN
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 25020806
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANISOTROPY; ATTENUATION; BCS THEORY; COHERENCE LENGTH; ENERGY GAP; HAMILTONIANS; HIGH-TC SUPERCONDUCTORS; HYBRIDIZATION; ISOTOPE EFFECTS; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; ULTRASONIC WAVES
- Descriptors DEC
- ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; MATHEMATICAL OPERATORS; PHYSICAL PROPERTIES; QUANTUM OPERATORS; SOUND WAVES; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES