Spin conductivity in two-dimensional non-collinear antiferromagnets

Yurika Kubo, Susumu Kurihara

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    18 Citations (Scopus)

    Abstract

    We propose a method to derive the spin current operator for non-collinear Heisenberg antiferromagnets. We show that the spin conductivity calculated by the spectral representation with the spin current satis.es the f-sum rule. We also study the spin conductivity at T = 0 within spin wave theory. We show how the spin conductivity depends on the external magnetic.eld with changing magnon spectrum. We also.nd that the spin Drude weight vanishes for any external magnetic.eld at T = 0.

    Original languageEnglish
    Article number113601
    JournalJournal of the Physical Society of Japan
    Volume82
    Issue number11
    DOIs
    Publication statusPublished - 2013 Nov

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    Keywords

    • Antiferromagnet
    • Drude weight
    • F-sum rule
    • Linear response theory
    • Spin current

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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