Pairing anisotropy and macroscopic anisotropy of superconductors

Journal Article · Thu Feb 01 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.2113· OSTI ID:6993379

Suwa, Y; Tsukada, M ^[1]

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1. Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan (JP)

Macroscopic properties of the superconductivity are investigated in the tight-binding picture taking account of the intersite pairing as well as the on-site pairing. We discuss the case of a layered material, a cubic material, and a quasi-one-dimensional material. A multicomponent Ginzburg-Landau equation, which takes the intersite-pairing effect into account as the different components of the order parameter, is derived from a microscopic theory. The angle dependence of the upper-critical field {ital H}{sub {ital c}2} is analyzed based on that equation and how the intersite interactions affect the anisotropy of {ital H}{sub {ital c}2} is clarified. The Fermi-energy dependence of the transition temperature {ital T}{sub {ital c}}, which does not simply reflect the density of states, is also discussed.

• OSTI ID: 6993379
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:4; 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
ANISOTROPY
CLATHRATES
CRITICAL FIELD
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
ENERGY LEVELS
FERMI LEVEL
GINZBURG-LANDAU THEORY
IMPURITIES
MAGNETIC FIELDS
MIXED STATE
ONE-DIMENSIONAL CALCULATIONS
ORDER PARAMETERS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TETRAGONAL LATTICES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE