Spin conductivity in two-dimensional non-collinear antiferromagnets

Yurika Kubo; Susumu Kurihara

doi:10.7566/JPSJ.82.113601

Spin conductivity in two-dimensional non-collinear antiferromagnets

Yurika Kubo^*, Susumu Kurihara

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

20 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 language	English
Article number	113601
Journal	Journal of the Physical Society of Japan
Volume	82
Issue number	11
DOIs	https://doi.org/10.7566/JPSJ.82.113601
Publication status	Published - 2013 Nov

Keywords

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

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.7566/JPSJ.82.113601

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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.",

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AU - Kurihara, Susumu

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AB - 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.

KW - Antiferromagnet

KW - Drude weight

KW - F-sum rule

KW - Linear response theory

KW - Spin current

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Spin conductivity in two-dimensional non-collinear antiferromagnets

Abstract

Keywords

ASJC Scopus subject areas

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