Escape-Rate Crossover between Quantum and Classical Regimes in Molecular Magnets: A Diagonalization Approach
Mesoscale and Nanoscale Physics
2009-10-31 v1
Abstract
We have studied numerically the quantum-classical crossover in the escape-rate for an uniaxial spin system with an arbitrarily directed field. Using the simple quantum transition-state theory, we have obtained the boundary separating the first- and the second-order crossover and the escape-rate in the presence of the transverse and longitudinal field. The results apply to the molecular nanomagnet, .
Keywords
Cite
@article{arxiv.cond-mat/0005530,
title = {Escape-Rate Crossover between Quantum and Classical Regimes in Molecular Magnets: A Diagonalization Approach},
author = {Gwang-Hee Kim and E. M. Chudnovsky},
journal= {arXiv preprint arXiv:cond-mat/0005530},
year = {2009}
}
Comments
11 pages, 5 figures