Clamping of ferroelectric and antiferromagnetic order parameters of YMnO3

被引：41
|
作者：
Hanamura, E
Hagita, K
Tanabe, Y
机构：
[1] Chitose Inst Sci & Technol, Chitose, Hokkaido 0668655, Japan
[2] CREST, Japan Sci & Technol Corp, Chitose, Hokkaido 0668655, Japan
[3] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 03期
关键词：
D O I：
10.1088/0953-8984/15/3/102
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
It was observed that a ferroelectric domain boundary (DB) is always accompanied by an antiferromagnetic DB in hexagonal YMnO3, by means of interference effects of the second-harmonic signal. The clamping of these two order parameters at the ferroelectric DB is shown theoretically to originate from Dzyaloshinski-Moriya interaction. This interaction favouring a right angle between the neighbouring spins is found to be operative within the 1313 and to reverse the direction of the spins across the ferroelectric DB.
引用
收藏
页码：L103 / L109
页数：7
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