Spin-lattice coupling in ferroelectric spiral magnets: Comparison between the cases of (Tb,Dy)MnO3 and CoCr2O4

Taka Hisa Arima; Yuichi Yamasaki; Takeshi Goto; Satoshi Iguchi; Kenya Ohgushi; Shigeki Miyasaka; Yoshinori Tokura

doi:10.1143/JPSJ.76.023602

Spin-lattice coupling in ferroelectric spiral magnets: Comparison between the cases of (Tb,Dy)MnO₃ and CoCr₂O₄

Taka Hisa Arima, Yuichi Yamasaki, Takeshi Goto, Satoshi Iguchi, Kenya Ohgushi, Shigeki Miyasaka, Yoshinori Tokura

研究成果: Article › 査読

35 被引用数 (Scopus)

抄録

Lattice modulation expected for various types of spiral magnetic ordering with a propagation vector Q_m is discussed in terms of the symmetric (S_i·S_j type) and antisymmetric (S_i x S_j type) exchange interactions between neighboring spins (S _i and S_j). We show that the conical ordering causes the superlattice modulation with Q_m via the antisymetric interaction, while the elliptical deformation of spiral induces a 2Q_m modulation in lattice, due to the symmetric and antisymmetric interactions. This theoretical prediction was experimentally confirmed for a transverse elliptical antiferromagnet (Tb,Dy)MnO₃ and a transverse conical ferrimagnet CoCr₂O₄, both accompanied by ferroelectricity (lattice deformation with Q = 0) as well.

本文言語	English
論文番号	023602
ジャーナル	journal of the physical society of japan
巻	76
号	2
DOI	https://doi.org/10.1143/JPSJ.76.023602
出版ステータス	Published - 2007 2月
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（全般）

文献へのアクセス

10.1143/JPSJ.76.023602

他のファイルとリンク

引用スタイル

@article{18ee72e4d9d440edb15f5015b7452de6,

title = "Spin-lattice coupling in ferroelectric spiral magnets: Comparison between the cases of (Tb,Dy)MnO3 and CoCr2O4",

abstract = "Lattice modulation expected for various types of spiral magnetic ordering with a propagation vector Qm is discussed in terms of the symmetric (Si·Sj type) and antisymmetric (Si x Sj type) exchange interactions between neighboring spins (S i and Sj). We show that the conical ordering causes the superlattice modulation with Qm via the antisymetric interaction, while the elliptical deformation of spiral induces a 2Qm modulation in lattice, due to the symmetric and antisymmetric interactions. This theoretical prediction was experimentally confirmed for a transverse elliptical antiferromagnet (Tb,Dy)MnO3 and a transverse conical ferrimagnet CoCr2O4, both accompanied by ferroelectricity (lattice deformation with Q = 0) as well.",

keywords = "Conical magnet, Cycloid, Exchange striction, Multiferroics, Perovskite manganese oxide, Spinel cobalt oxide, Spiral magnet, Superlattice, Synchrotron x-ray diffraction",

author = "Arima, {Taka Hisa} and Yuichi Yamasaki and Takeshi Goto and Satoshi Iguchi and Kenya Ohgushi and Shigeki Miyasaka and Yoshinori Tokura",

year = "2007",

month = feb,

doi = "10.1143/JPSJ.76.023602",

language = "English",

volume = "76",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "2",

}

TY - JOUR

T1 - Spin-lattice coupling in ferroelectric spiral magnets

T2 - Comparison between the cases of (Tb,Dy)MnO3 and CoCr2O4

AU - Arima, Taka Hisa

AU - Yamasaki, Yuichi

AU - Goto, Takeshi

AU - Iguchi, Satoshi

AU - Ohgushi, Kenya

AU - Miyasaka, Shigeki

AU - Tokura, Yoshinori

PY - 2007/2

Y1 - 2007/2

N2 - Lattice modulation expected for various types of spiral magnetic ordering with a propagation vector Qm is discussed in terms of the symmetric (Si·Sj type) and antisymmetric (Si x Sj type) exchange interactions between neighboring spins (S i and Sj). We show that the conical ordering causes the superlattice modulation with Qm via the antisymetric interaction, while the elliptical deformation of spiral induces a 2Qm modulation in lattice, due to the symmetric and antisymmetric interactions. This theoretical prediction was experimentally confirmed for a transverse elliptical antiferromagnet (Tb,Dy)MnO3 and a transverse conical ferrimagnet CoCr2O4, both accompanied by ferroelectricity (lattice deformation with Q = 0) as well.

AB - Lattice modulation expected for various types of spiral magnetic ordering with a propagation vector Qm is discussed in terms of the symmetric (Si·Sj type) and antisymmetric (Si x Sj type) exchange interactions between neighboring spins (S i and Sj). We show that the conical ordering causes the superlattice modulation with Qm via the antisymetric interaction, while the elliptical deformation of spiral induces a 2Qm modulation in lattice, due to the symmetric and antisymmetric interactions. This theoretical prediction was experimentally confirmed for a transverse elliptical antiferromagnet (Tb,Dy)MnO3 and a transverse conical ferrimagnet CoCr2O4, both accompanied by ferroelectricity (lattice deformation with Q = 0) as well.

KW - Conical magnet

KW - Cycloid

KW - Exchange striction

KW - Multiferroics

KW - Perovskite manganese oxide

KW - Spinel cobalt oxide

KW - Spiral magnet

KW - Superlattice

KW - Synchrotron x-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=33847404590&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33847404590&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.76.023602

DO - 10.1143/JPSJ.76.023602

M3 - Article

AN - SCOPUS:33847404590

SN - 0031-9015

VL - 76

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 2

M1 - 023602

ER -