Low temperature specific heat of the vortex lattice in layered superconductors
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
The contribution of the vortex fluctuations to the specific heat of the vortex lattice, [ital C][sub [ital v]], in a highly anisotropic layered superconductor is calculated for the field [bold B] perpendicular to the layers in the interval [ital H][sub c1][much lt][ital B][much lt][ital H][sub [ital c]2]. The model of the quantum overdamped oscillator for vortex vibrations is used to describe the dynamics of vortices at low temperatures. The specific heat [ital C][sub [ital v]]([ital T],[ital B]) is linear in temperature at low [ital T] and increases with field, [ital C][sub [ital v]][proportional to]ln[ital B] in the case of weak pinning and [ital C][sub [ital v]][proportional to][ital B] in the case of strong pinning.
- OSTI ID:
- 5282788
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:21; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DYNAMICS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MECHANICS
MIXED STATE
PHYSICAL PROPERTIES
SPECIFIC HEAT
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
VORTICES