17 citations · 41 across the 5 of their papers we have counts for
5 papers
Bifurcation of Periodic Instanton in Decay-Rate Transition
Hyun-Soo Min, Hungsoo Kim, D. K. Park +3
We investigate a bifurcation of periodic instanton in Euclidean action-temperature diagram in quantum mechanical models. It is analytically shown that multiple zero modes of fluctu…
Oscillation of the tunnel splitting in nanospin systems within the particle mapping formalism
Sahng-Kyoon Yoo, Soo-Young Lee, Dal-Ho Yoon +1
The oscillation of tunnel splitting in the biaxial spin system within magnetic field along the anisotropy axis is analyzed within the particle mapping approach, rather than in the…
Quantum-classical phase transition of escape rate in biaxial spin system with an arbitrarily directed magnetic field
Chang-Soo Park, Sahng-Kyoon Yoo, Dal-Ho Yoon
We investigate the escape rate of a biaxial spin particle with an arbitrarily dierected magnetic field in the easy plane, described by Hamiltonian ${\cal H} = -AS_z^2 - BS_x^2 -H_x…
Escape rate of a biaxial nanospin system in a magnetic field : first- and second-order transition between quantum and classical regimes
ChangSoo Park, Sahng-Kyoon Yoo, D. K. Park +1
We investigate the escape rate of the biaxial nanospin particle with a magnetic field applied along the easy axis. The model studied here is described by the Hamiltonian ${\cal H}…
Escape rate of the nanospin system in a magnetic field: the first-order phase transition within quantum regime
Chang Soo Park, Sahng-Kyoon Yoo, D. K. Park +1
We have investigated the escape rate of the nanospin particle with a magnetic field applied along the easy axis. The model studied here is described by the Hamiltonian $\hat{\cal H…