Pinning and thermal fluctuations of a flux line in high-temperature superconductors

Journal Article · Mon Nov 20 04:00:00 EST 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.2421· OSTI ID:5117169

Inui, M; Littlewood, P B; Coppersmith, S N ^[1]

---

1. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (USA)

Using a simple model of single vortex depinning, we show that the temperature dependence of both resistivity and ac susceptibility in the superconducting state in moderate magnetic fields can be understood in terms of the activation of vortices from homogeneous and densely distributed pinning centers. Furthermore, the field dependence of the activation energy is explained by including the interaction of vortices above {ital H}{similar to}1 T, below which the distribution of pinning strengths becomes important.

• OSTI ID: 5117169
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 63:21; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSOLUTE ZERO TEMPERATURE
AC SYSTEMS
ACTIVATION ENERGY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY
ENERGY SYSTEMS
FLUCTUATIONS
GINZBURG-LANDAU THEORY
LOW TEMPERATURE
MAGNETIC FIELDS
MAGNETIC FLUX
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MATHEMATICAL MODELS
ORDER PARAMETERS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWER SYSTEMS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS
VARIATIONS