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cond-mat.mes-hall2000★ 13 cited
First- and second-order transitions of the escape rate in ferrimagnetic or antiferromagnetic particles
Gwang-Hee Kim
Quantum-classical escape-rate transition has been studied for two general forms of magnetic anisotropy in ferrimagnetic or antiferromagnetic particles. It is found that the range o…
cond-mat.mes-hall2000★ 17 cited
Escape-Rate Crossover between Quantum and Classical Regimes in Molecular Magnets: A Diagonalization Approach
Gwang-Hee Kim, E. M. Chudnovsky
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-s…