Thermal conductivity of the vortex lattice state involving the antiferromagnetism around the core

Mitsuaki Takigawa, Masanori Ichioka, Kazushige Machida

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

The thermal conductivity κxx is the difference between higher and lower temperature regions, because the spatially-resolved thermal conductivity κxx(r) is localized around the vortex core at lower temperature and delocalized at higher temperature. On one hand, much attention is focused on the spin and charge ordering around the vortex. When the antiferromagnetism appears around the core, the energy gap suppresses the density of states on the Fermi energy, and the zero-energy peak at the vortex core splits or vanishes. The κxx under the Néel temperature is suppressed by the antiferromagnetism. We solve the Bogoliubov-de Gennes equation self-consistently by two-dimensional extended Hubbard model including the repulsive interaction U, and calculate the κxx on the basis of the linear response theory. The picture of the spatial variation of the thermal conductivity κ(r) through the spin resolved local DOS well explains recent experiments.

Original languageEnglish
Pages (from-to)375-379
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume404
Issue number1-4
DOIs
Publication statusPublished - May 1 2004
EventProceedings of the third European Conference on Vortex Matter - Crete, Greece
Duration: Sep 20 2003Sep 28 2003

Keywords

  • Antiferromagnetism
  • Thermal conductivity
  • Vortex lattice

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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