Localization effects on superconductivity in homogeneous metallic glasses

Journal Article · Sat Jun 01 00:00:00 EDT 1985 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.31.7442· OSTI ID:5568977

Poon, S J

It is pointed out that localization effects on bulk superconductivity do exist and can be significant in homogeneous amorphous alloys (or typical metallic glasses) whose upper critical fields appear to follow the standard Werthamer-Helfand-Hohenberg-Maki (WHHM) curves. Owing to the similarity in the temperature dependence of critical fields predicted by the Fukuyama-Ebisawa-Maekawa theory of the weakly localized regime and the WHHM results over a very wide temperature range, these effects have escaped notice heretofore. Comparison of the electronic density of states obtained from specific-heat measurement (absence of field-induced delocalization effects) and the ''apparent'' one derived from fitting critical-field data reveals the aforementioned effects.

• Research Organization: Ames LaboratoryU.S. Department of Energy, Iowa State University, Ames, Iowa 50011
• OSTI ID: 5568977
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 31:11
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
METALLIC GLASSES
SUPERCONDUCTIVITY
CRITICAL FIELD
ELECTRONIC STRUCTURE
ENERGY-LEVEL DENSITY
LOCALITY
PERTURBATION THEORY
SPECIFIC HEAT
TEMPERATURE DEPENDENCE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETIC FIELDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
360104* - Metals & Alloys- Physical Properties
656102 - Solid State Physics- Superconductivity- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena- (-1987)