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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