Cu3Nb2O8: A Multiferroic with Chiral Coupling to the Crystal Structure

被引：80

作者：

Johnson, R. D. ^{[1
,2
]}

Nair, Sunil ^{[1
]}

Chapon, L. C. ^{[2
]}

Bombardi, A. ^{[3
]}

Vecchini, C. ^{[3
]}

Prabhakaran, D. ^{[1
]}

Boothroyd, A. T. ^{[1
]}

Radaelli, P. G. ^{[1
]}

机构：

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 13期

基金：

英国工程与自然科学研究理事会;

关键词：

FERROELECTRIC POLARIZATION;

D O I：

10.1103/PhysRevLett.107.137205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By combining bulk properties, neutron diffraction, and nonresonant x-ray diffraction measurements, we demonstrate that the new multiferroic Cu3Nb2O8 becomes polar simultaneously with the appearance of generalized helicoidal magnetic ordering. The electrical polarization is oriented perpendicularly to the common plane of rotation of the spins-an observation that cannot be reconciled with the conventional theory developed for cycloidal multiferroics. Our results are consistent with coupling between a macroscopic structural rotation, which is allowed in the paramagnetic group, and magnetically induced structural chirality.

引用

页数：5

共 18 条

[1] Ferroelectricity induced by proper-screw type magnetic order [J].

Arima, Taka-hisa .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2007, 76 (07)

[2] MAGNETIC SCATTERING OF X-RAYS [J].

BLUME, M .

JOURNAL OF APPLIED PHYSICS, 1985, 57 (08) :3615-3618

[3]

Chapon L. C., 2011, Neutron News, V22, P22, DOI [DOI 10.1080/10448632.2011.569650, 10.1080/10448632.2011.569650]

[4] ON THE CRYSTAL-STRUCTURE OF CU3NBTAO8 [J].

HARNEIT, O ;

MULLERBUSCHBAUM, H .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1992, 613 (07) :60-62

[5] Bond electronic polarization induced by spin [J].

Jia, Chenglong ;

Onoda, Shigeki ;

Nagaosa, Naoto ;

Han, Jung Hoon .

PHYSICAL REVIEW B, 2006, 74 (22)

[6] Microscopic theory of spin-polarization coupling in multiferroic transition metal oxides [J].

Jia, Chenglong ;

Onoda, Shigeki ;

Nagaosa, Naoto ;

Han, Jung Hoon .

PHYSICAL REVIEW B, 2007, 76 (14)

[7] HELICAL SPIN-DENSITY WAVE DUE TO ANTISYMMETRIC EXCHANGE INTERACTION [J].

KATAOKA, M ;

NAKANISHI, O .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1981, 50 (12) :3888-3896

[8] Magnetic inversion symmetry breaking and ferroelectricity in TbMnO3 -: art. no. 087206 [J].

Kenzelmann, M ;

Harris, AB ;

Jonas, S ;

Broholm, C ;

Schefer, J ;

Kim, SB ;

Zhang, CL ;

Cheong, SW ;

Vajk, OP ;

Lynn, JW .

PHYSICAL REVIEW LETTERS, 2005, 95 (08)

[9] Direct transition from a disordered to a multiferroic phase on a triangular lattice [J].

Kenzelmann, M. ;

Lawes, G. ;

Harris, A. B. ;

Gasparovic, G. ;

Broholm, C. ;

Ramirez, A. P. ;

Jorge, G. A. ;

Jaime, M. ;

Park, S. ;

Huang, Q. ;

Shapiro, A. Ya. ;

Demianets, L. A. .

PHYSICAL REVIEW LETTERS, 2007, 98 (26)

[10] Inversion-symmetry breaking in the noncollinear magnetic phase of the triangular-lattice antiferromagnet CuFeO2 [J].

Kimura, T. ;

Lashley, J. C. ;

Ramirez, A. P. .

PHYSICAL REVIEW B, 2006, 73 (22)

← 1 2 →