Effect of a magnetic field on the specific heat jump of a superconducting alloy containing paramagnetic impurities with local states within the gap

Journal Article · Sun May 01 04:00:00 EDT 1983 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00683561· OSTI ID:6015650

Sihota, B; Nagi, A D.S.

The effect of a uniform magnetic field on the specific heat jump Delta-barC-bar of a superconductor containing paramagnetic impurities has been investigated. The impurities are described by the Shiba-Rusinov model. Taking the normalized position of the bound state within the BCS gap epsilon/sub 0/ = 0.8 and 0.0 and the parameter ..cap alpha.. = /S/sup 2/) = 1.0 and 1/3 as typical values, we find the detailed dependence of Delta-barC-bar on the impurity concentration c-bar and the transition temperature T/sub c/. In some cases Delta-barC-bar diverges at certain values of c-bar or T/sub c/, signaling a change of the normal-superconductor phase transition from second order to first order.

• Research Organization: GWP, Waterloo Campus, University of Waterloo, Waterloo, Ontario, Canada
• OSTI ID: 6015650
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 51:3; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABRIKOSOV THEORY
ALLOYS
ENERGY
ENERGY GAP
FREE ENERGY
FUNCTIONS
GREEN FUNCTION
IMPURITIES
MAGNETIC FIELDS
ORDER PARAMETERS
PHYSICAL PROPERTIES
SPECIFIC HEAT
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE