Multiferroic Behavior in Trimerized Mott Insulators

被引：16

作者：

Kamiya, Y. ^{[1
]}

Batista, C. D. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 09期

关键词：

KAGOME ANTIFERROMAGNET; MAGNETIC-PROPERTIES; TRIANGULAR LATTICE; NITRONYL NITROXIDE; SPIN; TRIANGLES; COMPLEX; MODEL; EPR;

D O I：

10.1103/PhysRevLett.108.097202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate multiferroic behavior in trimerized Mott insulators through the interplay between spins and electric dipole moments resulting from electronic charge fluctuations in frustrated units. The model consists of stacked triangular layers of trimers with small intertrimer exchange interactions J' and J ''. Ferroelectric states coexist with ferro- or antiferromagnetic orderings depending on the value of the magnetic field H and the sign of the interlayer exchange J ''. The electric polarization undergoes abrupt changes as a function of H.

引用

页数：5

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