Anisotropy effects in a mixed quantum-classical Heisenberg model in two dimensions
| Autor: | Y Meurdesoif, Olivier Kahn, C. Meyers, Y. Leroyer |
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| Přispěvatelé: | Centre de physique moléculaire optique et hertzienne (CPMOH), Université Sciences et Technologies - Bordeaux 1-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB) |
| Jazyk: | angličtina |
| Rok vydání: | 1998 |
| Předmět: |
Physics
[PHYS]Physics [physics] Statistical Mechanics (cond-mat.stat-mech) Heisenberg model Monte Carlo method FOS: Physical sciences 02 engineering and technology Renormalization group Classical Heisenberg model 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 3. Good health Exchange bias Ferromagnetism Quantum mechanics 0103 physical sciences Condensed Matter::Strongly Correlated Electrons General Materials Science 010306 general physics 0210 nano-technology Anisotropy Quantum Condensed Matter - Statistical Mechanics ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Physics: Condensed Matter Journal of Physics: Condensed Matter, IOP Publishing, 1998, 10 (9), pp.2065-2079. ⟨10.1088/0953-8984/10/9/012⟩ |
| ISSN: | 0953-8984 1361-648X |
| DOI: | 10.1088/0953-8984/10/9/012⟩ |
| Popis: | We analyse a specific two dimensional mixed spin Heisenberg model with exchange anisotropy, by means of high temperature expansions and Monte Carlo simulations. The goal is to describe the magnetic properties of the compound (NBu_{4})_{2}Mn_{2}[Cu(opba)]_{3}\cdot 6DMSO\cdot H_{2}O which exhibits a ferromagnetic transition at $T_{c}=15K$. Extrapolating our analysis on the basis of renormalisation group arguments, we find that this transition may result from a very weak anisotropy effect. Comment: 8 pages, 10 Postscript figures |
| Databáze: | OpenAIRE |
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