Collective-flux-pinning phenomena in amorphous superconductors
Journal Article
·
· Phys. Rev. Lett.; (United States)
The pinning force F/sub p/ in amorphous Nb/sub 3/Ge films with T/sub c/approx.4 K has been measured as a function of perpendicular field, temperature, and thickness of the samples. As a result of the large kappa and low J/sub c/ characteristic of amorphous superconductors the pinning force for the first time is found to be in good agreement with the theory of Larkin and Ovchinnikov for collective pinning extended to the two-dimensional case. Pinning-mediated renormalization of the shear modulus leads to a sharp peak in F/sub p/ near the upper critical field.
- Research Organization:
- IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598
- OSTI ID:
- 5809833
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 47:26; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMORPHOUS STATE
CORRELATIONS
CRITICAL FIELD
DATA
DIMENSIONS
EXPERIMENTAL DATA
FILMS
GERMANIUM COMPOUNDS
INFORMATION
MAGNETIC FIELDS
MAGNETIC FLUX
NIOBIUM COMPOUNDS
NUMERICAL DATA
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
THEORETICAL DATA
THICKNESS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
360603* -- Materials-- Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMORPHOUS STATE
CORRELATIONS
CRITICAL FIELD
DATA
DIMENSIONS
EXPERIMENTAL DATA
FILMS
GERMANIUM COMPOUNDS
INFORMATION
MAGNETIC FIELDS
MAGNETIC FLUX
NIOBIUM COMPOUNDS
NUMERICAL DATA
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
THEORETICAL DATA
THICKNESS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE