Nernst Effect as a Signature of Quantum Fluctuations in Quasi-1D Superconductors
arXiv:1208.4918 · doi:10.1103/PhysRevB.87.054510
Abstract
We study a model for the transverse thermoelectric response due to quantum superconducting fluctuations in a two-leg Josephson ladder, subject to a perpendicular magnetic field B and a transverse temperature gradient. The off-diagonal Peltier coefficient (α_{xy}) and the Nernst effect are evaluated as functions of B and the temperature T. The Nernst effect is found to exhibit a prominent peak close to the superconductor-insulator transition (SIT), which becomes progressively enhanced at low T. In addition, we derive a relation to diamagnetic response: α_{xy}= -M/T_0, where M is the equilibrium magnetization and T_0 a plasma energy in the superconducting legs.
An extended (and hopefully more comprehensible) version of an earlier posting
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