Correlation between ferroelectric polarization and sense of helical spin order in multiferroic MnWO4

被引：69

作者：

Sagayama, Hajime ^{[1
]}

Taniguchi, Kouji ^{[1
]}

Abe, Nobuyuki ^{[2
]}

Arima, Taka-hisa ^{[1
]}

Soda, Minoru ^{[3
]}

Matsuura, Masato ^{[3
]}

Hirota, Kazuma ^{[3
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[3] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.77.220407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a polarized-neutron-diffraction study on a single crystal sample of MnWO4, wherein the ferroelectricity and spiral magnetic order coexist. The direction of electric polarization controls the sense of helix that can be detected from the difference in intensities of magnetic satellites for parallel and antiparallel spin directions of incident neutrons with respect to a scattering vector. The temperature dependence of the difference agrees well with that of the electric polarization. These results corroborate that an inverse effect of a Dzyaloshinskii-Moriya interaction is the origin of the spontaneous electric polarization in the spiral phase of MnWO4.

引用

页数：4

共 26 条

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