Ferroelectricity in the magnetic e-phase of orthorhombic perovskites

被引：395

作者：

Sergienko, Ivan A. ^{[1
]}

Sen, Cengiz

Dagotto, Elbio

机构：

[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[3] Florida State Univ, Dept Phys, Tallahassee, FL 32310 USA

[4] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.97.227204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the symmetry of the spin zigzag chain E phase of the orthorhombic perovskite manganites and nickelates allows for the existence of a finite ferroelectric polarization. The proposed microscopic mechanism is independent of spin-orbit coupling. We predict that the polarization induced by the E-type magnetic order can potentially be enhanced by up to 2 orders of magnitude with respect to that in the spiral magnetic phases of TbMnO3 and similar multiferroic compounds.

引用

页数：4

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