Volume 106, Number 4, May 2014
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||27 May 2014|
Dzyaloshinskii-Moriya interaction and magnetic ordering in 1D and 2D at nonzero T
1 Departamento de Física, Facultad de Ciencias, Universidad de Chile - Casilla 653, Santiago, 7800024 Chile
2 Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA - Avda. Ecuador 3493, Santiago, 9170124 Chile
3 Departamento de Física, Facultad de Ciencia, Universidad de Santiago de Chile - Casilla 307, Santiago, Chile
Received: 18 December 2013
Accepted: 2 May 2014
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 Dzyaloshinskii-Moriya interaction, but short-range correlations are increased, thereby allowing the existence of long-range magnetic order in these low-dimensional systems.
PACS: 75.10.-b – General theory and models of magnetic ordering / 75.30.Kz – Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.) / 75.10.Jm – Quantized spin models, including quantum spin frustration
© EPLA, 2014
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