Electric Field Control of the Magnetic Chiralities in Ferroaxial Multiferroic RbFe(MoO4)2

被引：63

作者：

Hearmon, Alexander J. ^{[1
,2
]}

Fabrizi, Federica ^{[1
]}

Chapon, Laurent C. ^{[3
,4
]}

Johnson, R. D. ^{[1
,3
]}

Prabhakaran, Dharmalingam ^{[1
]}

Streltsov, Sergey V. ^{[5
,6
]}

Brown, P. J. ^{[4
]}

Radaelli, Paolo G. ^{[1
]}

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England

[3] STFC Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[5] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620041, Russia

[6] Ural Fed Univ, Ekaterinburg 620002, Russia

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 23期

基金：

英国工程与自然科学研究理事会;

关键词：

ANTIFERROMAGNETS; POLARIZATION; DIFFRACTION;

D O I：

10.1103/PhysRevLett.108.237201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The coupling of magnetic chiralities to the ferroelectric polarization in multiferroic RbFe(MoO4)(2) is investigated by neutron spherical polarimetry. Because of the axiality of the crystal structure below T-c = 190 K, helicity and triangular chirality are symmetric-exchange coupled, explaining the onset of the ferroelectricity in this proper-screw magnetic structure-a mechanism that can be generalized to other systems with ferroaxial distortions in the crystal structure. With an applied electric field, we demonstrate control of the chiralities in both structural domains simultaneously.

引用

页数：5

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