Rotons and spin transport in square lattice antiferromagnets in magnetic fields

Yurika Kubo; Susumu Kurihara

doi:10.1088/1742-6596/592/1/012116

Rotons and spin transport in square lattice antiferromagnets in magnetic fields

Yurika Kubo, Susumu Kurihara

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

Abstract

We investigate the excitation spectrum and spin conductivity in square lattice antiferromagnets by nonlinear spin-wave theory. We have found that the excitation spectrum have a rotonlike minimum at about 3/4 of the saturation field. The «roton» appears and softens rapidly to zero as a function of the magnetic field as a result of the especially strong three-magnon interactions. For the spin conductivity, it becomes clear that a two-magnon sideband appears for sufficiently strong three-magnon interactions.

Original language	English
Article number	012116
Journal	Journal of Physics: Conference Series
Volume	592
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/592/1/012116
Publication status	Published - 2014

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1088/1742-6596/592/1/012116

Fingerprint Dive into the research topics of 'Rotons and spin transport in square lattice antiferromagnets in magnetic fields'. Together they form a unique fingerprint.

Cite this

@article{61adcb92778d49e7bfa7ca06d0edee26,

title = "Rotons and spin transport in square lattice antiferromagnets in magnetic fields",

abstract = "We investigate the excitation spectrum and spin conductivity in square lattice antiferromagnets by nonlinear spin-wave theory. We have found that the excitation spectrum have a rotonlike minimum at about 3/4 of the saturation field. The «roton» appears and softens rapidly to zero as a function of the magnetic field as a result of the especially strong three-magnon interactions. For the spin conductivity, it becomes clear that a two-magnon sideband appears for sufficiently strong three-magnon interactions.",

author = "Yurika Kubo and Susumu Kurihara",

year = "2014",

doi = "10.1088/1742-6596/592/1/012116",

language = "English",

volume = "592",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - Rotons and spin transport in square lattice antiferromagnets in magnetic fields

AU - Kubo, Yurika

AU - Kurihara, Susumu

PY - 2014

Y1 - 2014

N2 - We investigate the excitation spectrum and spin conductivity in square lattice antiferromagnets by nonlinear spin-wave theory. We have found that the excitation spectrum have a rotonlike minimum at about 3/4 of the saturation field. The «roton» appears and softens rapidly to zero as a function of the magnetic field as a result of the especially strong three-magnon interactions. For the spin conductivity, it becomes clear that a two-magnon sideband appears for sufficiently strong three-magnon interactions.

AB - We investigate the excitation spectrum and spin conductivity in square lattice antiferromagnets by nonlinear spin-wave theory. We have found that the excitation spectrum have a rotonlike minimum at about 3/4 of the saturation field. The «roton» appears and softens rapidly to zero as a function of the magnetic field as a result of the especially strong three-magnon interactions. For the spin conductivity, it becomes clear that a two-magnon sideband appears for sufficiently strong three-magnon interactions.

UR - http://www.scopus.com/inward/record.url?scp=84925339393&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84925339393&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/592/1/012116

DO - 10.1088/1742-6596/592/1/012116

M3 - Article

AN - SCOPUS:84925339393

VL - 592

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012116

ER -

Rotons and spin transport in square lattice antiferromagnets in magnetic fields

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this