Induced Magnetoelectric Response in Pnma Perovskites

被引：66

作者：

Bousquet, Eric ^{[1
,2
]}

Spaldin, Nicola ^{[1
]}

机构：

[1] ETH, Dept Mat, CH-8093 Zurich, Switzerland

[2] Univ Liege, B-4000 Sart Tilman Par Liege, Belgium

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.107.197603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use symmetry analysis to show that the G-, C-, and A-type antiferromagnetic Pnma perovskites can exhibit magnetoelectric (ME) responses when a ferroelectric instability is induced with epitaxial strain. Using first-principles calculations we compute the values of the allowed ME response in strained CaMnO3 as a model system. Our results show that large linear and non-linear-ME responses are present and can diverge when close to the ferroelectric phase transition. By decomposing the electronic and ionic contributions, we explore the detailed mechanism of the ME response.

引用

页数：5

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