Dzyaloshinskii-Moriya interaction and magnetic ordering in 1D and 2D at nonzero T

被引：6

作者：

Torres, F. ^{[1
,2
]}

Altbir, D. ^{[2
,3
]}

Kiwi, M. ^{[1
,2
]}

机构：

[1] Univ Chile, Fac Ciencias, Dept Fis, Santiago 7800024, Chile

[2] CEDENNA, Ctr Desarrollo Nanociencia & Nanotecnol, Santiago 9170124, Chile

[3] Univ Santiago Chile, Fac Ciencia, Dept Fis, Santiago, Chile

来源：

EPL | 2014年 / 106卷 / 04期

关键词：

ANISOTROPIC SUPEREXCHANGE INTERACTION; LONG-RANGE ORDER; WEAK FERROMAGNETISM; 2-DIMENSIONAL SYSTEMS; CONTINUOUS SYMMETRY; DIMENSIONS;

D O I：

10.1209/0295-5075/106/47004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The inclusion of a Dzyaloshinskii-Moriya short-range antisymmetric interaction in the Heisenberg Hamiltonian induces spontaneous magnetization, at nonzero temperatures, in one and two dimensions. It is shown that quantum fluctuations are reduced by the DzyaloshinskiiMoriya interaction, but short-range correlations are increased, thereby allowing the existence of long-range magnetic order in these low-dimensional systems. Copyright (C) EPLA, 2014

引用

页数：5

共 16 条

[1] NEW APPROACH TO THE THEORY OF SUPEREXCHANGE INTERACTIONS [J].