The splitting of the electromagnon mode in conically spiral multiferroic magnets

被引：6

作者：

Chen, Hong-Bo ^{[1
]}

Zhou, Yi

Li, You-Quan

机构：

[1] Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2011年 / 23卷 / 06期

关键词：

POLARIZATION;

D O I：

10.1088/0953-8984/23/6/066002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 [凝聚态物理];

摘要：

In this paper, we study conically spiral multiferroic magnets with coupled magnetic and ferroelectric orders. By generalizing the spin-current model, we study spin wave excitations and electromagnons. We find that the electromagnon mode will split into two branches with different dispersions in an (external or internal) magnetic field. We apply our theory to some multiferroic materials and find that the results qualitatively agree with recent experiments. We also make predictions for new experiments.

引用

页数：6

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