Transition temperature of two-band superconductors with Anderson impurities

Journal Article · Sun Feb 01 04:00:00 EST 1981 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00120203· OSTI ID:6497837

Yoksan, S

The influence of impurities on the superconducting transition temperature of two-band superconductors containing Anderson impurities is investigated. It is found that the concentration-dependent transition temperature shows typical departures from the formula for a single-band superconductor. These departures occur because of the interband scattering of conduction electrons on impurities. The calculations reveal clearly that in the presence of impurities the effective pairing interaction becomes coupling-parameter dependent, giving rise to a new pair-weakening mechanism. Analytic results for T/sub c/ on the basis of this simple two-band model are presented.

• Research Organization: Department of Physics, Srinakharinwirot University, Prasarnmitr, Bangkok, Thailand
• OSTI ID: 6497837
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 42:3; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BAND THEORY
ELECTRON-ELECTRON COUPLING
INTERFERING ELEMENTS
PHYSICAL PROPERTIES
QUANTITY RATIO
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE