Spin-Lattice Coupling, Frustration, and Magnetic Order in Multiferroic RMnO3

被引：145

作者：

Fabreges, X. ^{[1
]}

Petit, S. ^{[1
]}

Mirebeau, I. ^{[1
]}

Pailhes, S. ^{[1
]}

Pinsard, L. ^{[2
]}

Forget, A. ^{[3
]}

Fernandez-Diaz, M. T. ^{[4
]}

Porcher, F. ^{[1
]}

机构：

[1] CE Saclay, CEA, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

[2] Univ Paris 11, ICMMO, Lab Phys Chim Etat Solide, F-91405 Orsay, France

[3] CE Saclay, CEA, CNRS, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 06期

关键词：

DIFFRACTION; EVOLUTION; DISTORTION; HOMNO3;

D O I：

10.1103/PhysRevLett.103.067204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed high-resolution neutron diffraction and inelastic neutron scattering experiments in the frustrated multiferroic hexagonal compounds RMnO3 (R=Ho,Yb,Sc,Y), which provide evidence of a strong magnetoelastic coupling in the whole family. We can correlate the atomic positions, the type of magnetic structure, and the nature of the spin waves whatever the R ion and temperature. The key parameter is the position of the Mn ions in the unit cell with respect to a critical threshold of 1/3, which determines the sign of the coupling between Mn triangular planes.

引用

页数：4

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