Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/243758
Type: Artigo de periódico
Title: A Stochastic Model For Magnetic Dynamics In Single-molecule
Author: Lopez-Ruiz
R.; Almeida
P. T.; Vaz
M. G. F.; Novak
M. A.; Beron
F.; Pirota
K. R.
Abstract: Hysteresis and magnetic relaxation curves were performed on double well potential systems with quantum tunneling possibility via stochastic simulations. Simulation results are compared with experimental ones using the Mn12 single-molecule magnet, allowing us to introduce time dependence in the model. Despite being a simple simulation model, it adequately reproduces the phenomenology of a thermally activated quantum tunneling and can be extended to other systems with different parameters. Assuming competition between the reversal modes, thermal (over) and tunneling (across) the anisotropy barrier, a separation of classical and quantum contributions to relaxation time can be obtained. (C) 2015 Elsevier B.V. All rights reserved.
Subject: Mn-12 Acetate
Relaxation
Mn-12-acetate
Cluster
Nanomagnet
Origin
State
Country: AMSTERDAM
Editor: ELSEVIER SCIENCE BV
Citation: A Stochastic Model For Magnetic Dynamics In Single-molecule. Elsevier Science Bv, v. 403, p. 188-192 APR-2016.
Rights: embargo
Identifier DOI: 10.1016/j.jmmm.2015.11.070
Address: http://www.sciencedirect.com/science/article/pii/S0304885315308386
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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