Low-magnetic-field control of electric polarization vector in a helimagnet

被引：323

作者：

Ishiwata, Shintaro ^{[1
]}

Taguchi, Yasujiro ^{[2
]}

Murakawa, Hiroshi ^{[1
]}

Onose, Yoshinori ^{[1
,3
]}

Tokura, Yoshinori ^{[1
,2
,3
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Multiferroics Project, ERATO,Japan Sci & Technol Agcy, Tokyo 1138656, Japan

[2] RIKEN, Cross Correlated Mat Res Grp CMRG, FRS, Wako, Saitama 3510198, Japan

[3] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

来源：

SCIENCE | 2008年 / 319卷 / 5870期

关键词：

D O I：

10.1126/science.1154507

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The mutual control of the electric and magnetic properties of a solid is currently of great interest because of the possible application for novel electronic devices. We report on the low- magneticfield ( for example, B values of +/- 30 milliteslas) control of the polarization ( P) vector in a hexaferrite, Ba2Mg2Fe12O22, which shows the helimagnetic spin structure with the propagation vector k(0) parallel to [ 001]. The B- induced transverse conical spin structure carries the P vector directing perpendicular to both B and k(0), in accord with the recently proposed spin- current model. Then, the oscillating or multidirectionally rotating B produces the cyclic displacement current via the flexible handling of the magnetic cone axis.

引用

页码：1643 / 1646

页数：4

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