Order parameters and phase diagram of multiferroic RMn2O5

被引：19

作者：

Harris, A. B. ^{[1
]}

Aharony, Amnon ^{[2
]}

Entin-Wohlman, Ora ^{[2
,3
]}

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[2] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[3] Tel Aviv Univ, Tel Aviv, Israel

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 21期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.217202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The generic magnetic phase diagram of multiferroic RMn2O5 (with R = Y, Ho, Tb, Er, Tm), which allows different sequences of ordered magnetic structures for different R's and different control parameters, is described using order parameters which explicitly incorporate the magnetic symmetry. A phenomenological magnetoelectric coupling is used to explain why some of these magnetic phases are also ferroelectric. Several new experiments, which can test this theory, are proposed.

引用

页数：4

共 41 条

[1] MULTICRITICALITY IN HEXATIC LIQUID-CRYSTALS [J].

AHARONY, A ;

BIRGENEAU, RJ ;

BROCK, JD ;

LITSTER, JD .

PHYSICAL REVIEW LETTERS, 1986, 57 (08) :1012-1015

[2] Multiferroicity induced by dislocated spin-density waves [J].

Betouras, Joseph J. ;

Giovannetti, Gianluca ;

van den Brink, Jeroen .

PHYSICAL REVIEW LETTERS, 2007, 98 (25)

[3] Spin structure and magnetic frustration in multiferroic RMn2O5 (R=Tb,Ho,Dy) -: art. no. 214402 [J].

Blake, GR ;

Chapon, LC ;

Radaelli, PG ;

Park, S ;

Hur, N ;

Cheong, SW ;

Rodríguez-Carvajal, J .

PHYSICAL REVIEW B, 2005, 71 (21)

[4] Manipulating the magnetic structure with electric fields in multiferroic ErMn2O5 [J].

Bodenthin, Y. ;

Staub, U. ;

Garcia-Fernandez, M. ;

Janoschek, M. ;

Schlappa, J. ;

Golovenchits, E. I. ;

Sanina, V. A. ;

Lushnikov, S. G. .

PHYSICAL REVIEW LETTERS, 2008, 100 (02)

[5] Ferroelectricity induced by acentric spin-density waves in YMn2O5 [J].

Chapon, LC ;

Radaelli, PG ;

Blake, GR ;

Park, S ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 2006, 96 (09)

[6] Structural anomalies and multiferroic behavior in magnetically frustrated TbMn2O5 -: art. no. 177402 [J].

Chapon, LC ;

Blake, GR ;

Gutmann, MJ ;

Park, S ;

Hur, N ;

Radaelli, PG ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 2004, 93 (17) :177402-1

[7] APPLICATION OF LANDAUS THEORY OF CONTINUOUS PHASE TRANSITIONS TO MAGNETIC PHASE TRANSITIONS [J].

CRACKNELL, AP .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1971, 4 (16) :2488-+

[8] Pressure-induced enhancement of ferroelectricity in multiferroic RMn2O5 (R=Tb,Dy,Ho) [J].

dela Cruz, C. R. ;

Lorenz, B. ;

Sun, Y. Y. ;

Wang, Y. ;

Park, S. ;

Cheong, S-W. ;

Gospodinov, M. M. ;

Chu, C. W. .

PHYSICAL REVIEW B, 2007, 76 (17)

[9] Mechanism leading to ferroelectricity induced in centrosymmetric crystals by antiferromagnetic transitions [J].

Goshen, S. ;

Mukamel, D. ;

Shaked, H. ;

Shtrikman, S. .

PHYSICAL REVIEW B-SOLID STATE, 1970, 2 (11) :4679-4685

[10] Towards a microscopic model of magnetoelectric interactions in Ni3V2O8 [J].

Harris, A. B. ;

Yildirim, T. ;

Aharony, A. ;

Entin-Wohlman, O. .

PHYSICAL REVIEW B, 2006, 73 (18)

← 1 2 3 4 5 →