Physics – Condensed Matter – Superconductivity
Scientific paper
2003-10-02
Phys. Rev. B. 68, 144511 (2003).
Physics
Condensed Matter
Superconductivity
To be published in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.68.144511
We have numerically investigated the dynamics of vortices in a clean layered superconductor placed in a perpendicular magnetic field. We describe the energetics using a Ginzburg-Landau free energy functional in the lowest Landau level approximation. The dynamics are determined using the time-dependent Ginzburg-Landau approximation, and thermal fluctuations are incorporated via a Langevin term. The c-axis conductivity at nonzero frequencies, as calculated from the Kubo formalism, shows a strong but not divergent increase as the melting temperature $T_M$ is approached from above, followed by an apparently discontinuous drop at the vortex lattice freezing temperature. The discontinuity is consistent with the occurrence of a first-order freezing. The calculated equilibrium properties agree with previous Monte Carlo studies using the same Hamiltonian. We briefly discuss the possibility of detecting this fluctuation conductivity experimentally.
Al-Saidi W. A.
Stroud David
No associations
LandOfFree
Langevin vortex dynamics for a layered superconductor in the lowest Landau level approximation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Langevin vortex dynamics for a layered superconductor in the lowest Landau level approximation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Langevin vortex dynamics for a layered superconductor in the lowest Landau level approximation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-211859