Importance of spin fluctuations for the thermodynamic properties of superconducting V and VN
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
Solving Eliashberg's equation on the imaginary ..omega.. axis, we calculate thermodynamic properties of superconducting V and VN including the influence of spin fluctuations within the theory of Berk and Schrieffer. We find that, besides the specific-heat coefficient ..gamma.., which is already known to be changed by spin fluctuations, the thermodynamic critical field H/sub c/(0) and the specific-heat jump ..delta..C are also strongly affected in both superconductors. For VN, we predict substantial increases of H/sub c/(0) and ..delta..C above those values which would be obtained without consideration of spin fluctuations. Therefore, specific-heat measurements on stoichiometric samples of VN could establish the importance of these effects.
- Research Organization:
- Kernforschungszentrum Karlsruhe, Institut fuer Angewandte Kernphysik I. D-7500 Karlsruhe, Postfach 3640, Federal Republic of Germany
- OSTI ID:
- 6346591
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 24:1; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
BAND THEORY
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY-LEVEL DENSITY
FLUCTUATIONS
GORKOV-ELIASHBERG THEORY
MAGNETIC FIELDS
METALS
NITRIDES
NITROGEN COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PNICTIDES
SPECIFIC HEAT
SPIN
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM
VANADIUM COMPOUNDS
VANADIUM NITRIDES
VARIATIONS
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
BAND THEORY
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY-LEVEL DENSITY
FLUCTUATIONS
GORKOV-ELIASHBERG THEORY
MAGNETIC FIELDS
METALS
NITRIDES
NITROGEN COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PNICTIDES
SPECIFIC HEAT
SPIN
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM
VANADIUM COMPOUNDS
VANADIUM NITRIDES
VARIATIONS