Heat capacity of pancake vortices in layered superconductors

Journal Article · Sun Dec 01 04:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.16116· OSTI ID:399826

Fetter, A L; Patel, S R ^[1]

---

1. Department of Physics, Stanford University, Stanford, California 94305-4060 (United States)

The heat capacity of a lattice of pancake vortices in a layered superconductor with perpendicular magnetic field {ital B} is evaluated in the limit {ital H}{sub {ital c}1}{lt}{ital B}{lt}{ital H}{sub {ital c}2}. The coupled dynamical equations for small oscillations of the vortex lattice are solved for general values of the vortex mass {ital m}{sub {ital v}}, the Magnus force parameter {alpha}, and the viscosity {eta}{ital s}, where {ital s} is the interlayer separation, and the contribution of each normal mode is expressed as a Fourier integral involving the correlation functions of the fluctuating random forces. The total heat capacity per vortex is found numerically for various values of the dimensionless ratio {alpha}/{eta}{ital s} that characterizes the relative importance of the Magnus force and the viscous drag force. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 399826
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 22 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DRAG
EQUATIONS OF MOTION
LAYERS
MAGNETIC FLUX
MIXED STATE
SPECIFIC HEAT
TYPE-II SUPERCONDUCTORS
VISCOSITY