Vortex-dynamics approach to the Nernst effect in extreme type-II superconductors dominated by phase fluctuations

S. Raghu, D. Podolsky, A. Vishwanath, David A. Huse

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

We present a method to study the Nernst effect and diamagnetism of an extreme type-II superconductor dominated by phase fluctuations. We work directly with vortex variables and our method allows us to tune vortex parameters (e.g., core energy and number of vortex species). We find that diamagnetic response and transverse thermoelectric conductivity (αxy) persist well above the Kosterlitz-Thouless transition temperature, and become more pronounced as the vortex core energy is increased. However, they weaken as the number of internal vortex states is increased. We find that αxy closely tracks the magnetization (-M/T) over a wide range of parameters.

Original languageEnglish (US)
Article number184520
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number18
DOIs
StatePublished - Nov 26 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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