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. Assuming a weak Josephson coupling on the rungs, the off-diagonal Peltier coefficient (αxy) and the Nernst effect are evaluated as functions of B and the temperature T. In this regime, the Nernst effect is found to exhibit a prominent peak close to the superconductor-insulator transition, which becomes progressively enhanced at low T. In addition, we derive a relation to the diamagnetic response αxy=-M/T0, where M is the equilibrium magnetization and T0 a plasma energy in the superconducting legs.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - 25 Feb 2013|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics