Coupling of phonons and spin waves in a triangular antiferromagnet

Jung Hoon Kim; Jung Hoon Han

doi:10.1103/PhysRevB.76.054431

Coupling of phonons and spin waves in a triangular antiferromagnet

Jung Hoon Kim
, Jung Hoon Han

Department of Physics

Sungkyunkwan University

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

14 Scopus citations

Abstract

We investigate the influence of the spin-phonon coupling in the triangular antiferromagnet where the coupling is of the exchange-striction type. The magnon dispersion is shown to be modified significantly at wave vector (2π,0) and its symmetry-related points, exhibiting a rotonlike minimum and an eventual instability in the dispersion. Various correlation functions such as equal-time phonon correlation, spin-spin correlation, and local magnetization are calculated in the presence of the coupling.

Original language	English
Article number	054431
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	76
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.76.054431
State	Published - 17 Aug 2007

Access to Document

10.1103/PhysRevB.76.054431

Cite this

@article{18c6590613134cc7875420193eb79bc6,

title = "Coupling of phonons and spin waves in a triangular antiferromagnet",

abstract = "We investigate the influence of the spin-phonon coupling in the triangular antiferromagnet where the coupling is of the exchange-striction type. The magnon dispersion is shown to be modified significantly at wave vector (2π,0) and its symmetry-related points, exhibiting a rotonlike minimum and an eventual instability in the dispersion. Various correlation functions such as equal-time phonon correlation, spin-spin correlation, and local magnetization are calculated in the presence of the coupling.",

author = "Kim, \{Jung Hoon\} and Han, \{Jung Hoon\}",

year = "2007",

month = aug,

day = "17",

doi = "10.1103/PhysRevB.76.054431",

language = "English",

volume = "76",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Coupling of phonons and spin waves in a triangular antiferromagnet

AU - Kim, Jung Hoon

AU - Han, Jung Hoon

PY - 2007/8/17

Y1 - 2007/8/17

N2 - We investigate the influence of the spin-phonon coupling in the triangular antiferromagnet where the coupling is of the exchange-striction type. The magnon dispersion is shown to be modified significantly at wave vector (2π,0) and its symmetry-related points, exhibiting a rotonlike minimum and an eventual instability in the dispersion. Various correlation functions such as equal-time phonon correlation, spin-spin correlation, and local magnetization are calculated in the presence of the coupling.

AB - We investigate the influence of the spin-phonon coupling in the triangular antiferromagnet where the coupling is of the exchange-striction type. The magnon dispersion is shown to be modified significantly at wave vector (2π,0) and its symmetry-related points, exhibiting a rotonlike minimum and an eventual instability in the dispersion. Various correlation functions such as equal-time phonon correlation, spin-spin correlation, and local magnetization are calculated in the presence of the coupling.

UR - https://www.scopus.com/pages/publications/34548027302

U2 - 10.1103/PhysRevB.76.054431

DO - 10.1103/PhysRevB.76.054431

M3 - Article

AN - SCOPUS:34548027302

SN - 1098-0121

VL - 76

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 5

M1 - 054431

ER -

Coupling of phonons and spin waves in a triangular antiferromagnet

Abstract

Access to Document

Other files and links

Fingerprint

Cite this