Strong-coupling theory of the upper critical magnetic field H/sub c/2

Journal Article · Thu May 01 04:00:00 EDT 1986 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.33.6123· OSTI ID:5706776

Schossmann, M; Schachinger, E

In this paper a strong-coupling theory of the upper critical magnetic field (H/sub c/2) is developed within the framework of the Werthamer-Helfand-Hohenberg theory. We include Pauli paramagnetic limiting and momentum scattering of the conduction electrons at randomly distributed impurity sites. The developed theory is tested against experimental data available for niobium and V/sub 3/Si. It is shown that for isotropic cases the presented theory gives excellent agreement with experiment over the complete temperature range. It is remarkable that it was not necessary in both cases to include spin-orbit scattering. It can be concluded that in most cases spin-orbit scattering was only used to compensate for strong-coupling effects in the older Bardeen-Cooper-Schrieffer--related theories.

• Research Organization: Physics Department, MacMaster University, Hamilton, Ontario, L8S 4M1 Canada
• OSTI ID: 5706776
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 33:9; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL FIELD
ELECTRON-PHONON COUPLING
ELEMENTS
IMPURITIES
MAGNETIC FIELDS
MATHEMATICAL MODELS
METALS
NIOBIUM
PARTICLE MODELS
RANDOMNESS
SCATTERING
SILICIDES
SILICON COMPOUNDS
STRONG-COUPLING MODEL
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TYPE-II SUPERCONDUCTORS
VANADIUM COMPOUNDS
VANADIUM SILICIDES