Clamping of ferroelectric and antiferromagnetic order parameters of YMnO3

被引：42

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

页码：L103 / L109

页数：7

共 21 条

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BLOCH F, 1932, Z PHYS, V24, P195

[2]

Dodd R. K., 1982, Solitons and nonlinear wave equations

[3] A THERMODYNAMIC THEORY OF WEAK FERROMAGNETISM OF ANTIFERROMAGNETICS [J].