Roles of bond alternation in magnetic phase diagram of RMnO3

Nobuo Furukawa, Masahito Mochizuki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In order to investigate the nature of the antiferromagnetic structures in perovskite RMnO3, we study a Heisenberg J1-J2 model with bond alternation using analytical and numerical approaches. The magnetic phase diagram which includes incommensurate spiral states and commensurate collinear states is reproduced. We discuss that the magnetic structure with spin ↑↑↓↓configuration (E-type structure) and the ferroelectricity emerge cooperatively to stabilize this phase. Magnetoelastic couplings are crucial to understand the magnetic and electric phase diagram of RMnO3.

Original languageEnglish
Article number033708
JournalJournal of the Physical Society of Japan
Volume79
Issue number3
DOIs
Publication statusPublished - 2010 Mar
Externally publishedYes

Fingerprint

alternations
phase diagrams
ferroelectricity
configurations

Keywords

  • A-type structure
  • Bond alternation
  • E-type structure
  • Heisenberg model
  • Multiferroics
  • RMnO
  • Spin spiral state

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Roles of bond alternation in magnetic phase diagram of RMnO3 . / Furukawa, Nobuo; Mochizuki, Masahito.

In: Journal of the Physical Society of Japan, Vol. 79, No. 3, 033708, 03.2010.

Research output: Contribution to journalArticle

@article{23d78b358b814510b04f4e703ce13fcd,
title = "Roles of bond alternation in magnetic phase diagram of RMnO3",
abstract = "In order to investigate the nature of the antiferromagnetic structures in perovskite RMnO3, we study a Heisenberg J1-J2 model with bond alternation using analytical and numerical approaches. The magnetic phase diagram which includes incommensurate spiral states and commensurate collinear states is reproduced. We discuss that the magnetic structure with spin ↑↑↓↓configuration (E-type structure) and the ferroelectricity emerge cooperatively to stabilize this phase. Magnetoelastic couplings are crucial to understand the magnetic and electric phase diagram of RMnO3.",
keywords = "A-type structure, Bond alternation, E-type structure, Heisenberg model, Multiferroics, RMnO, Spin spiral state",
author = "Nobuo Furukawa and Masahito Mochizuki",
year = "2010",
month = "3",
doi = "10.1143/JPSJ.79.033708",
language = "English",
volume = "79",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "3",

}

TY - JOUR

T1 - Roles of bond alternation in magnetic phase diagram of RMnO3

AU - Furukawa, Nobuo

AU - Mochizuki, Masahito

PY - 2010/3

Y1 - 2010/3

N2 - In order to investigate the nature of the antiferromagnetic structures in perovskite RMnO3, we study a Heisenberg J1-J2 model with bond alternation using analytical and numerical approaches. The magnetic phase diagram which includes incommensurate spiral states and commensurate collinear states is reproduced. We discuss that the magnetic structure with spin ↑↑↓↓configuration (E-type structure) and the ferroelectricity emerge cooperatively to stabilize this phase. Magnetoelastic couplings are crucial to understand the magnetic and electric phase diagram of RMnO3.

AB - In order to investigate the nature of the antiferromagnetic structures in perovskite RMnO3, we study a Heisenberg J1-J2 model with bond alternation using analytical and numerical approaches. The magnetic phase diagram which includes incommensurate spiral states and commensurate collinear states is reproduced. We discuss that the magnetic structure with spin ↑↑↓↓configuration (E-type structure) and the ferroelectricity emerge cooperatively to stabilize this phase. Magnetoelastic couplings are crucial to understand the magnetic and electric phase diagram of RMnO3.

KW - A-type structure

KW - Bond alternation

KW - E-type structure

KW - Heisenberg model

KW - Multiferroics

KW - RMnO

KW - Spin spiral state

UR - http://www.scopus.com/inward/record.url?scp=77949719922&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77949719922&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.79.033708

DO - 10.1143/JPSJ.79.033708

M3 - Article

VL - 79

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 3

M1 - 033708

ER -