104 citations · 349 across the 16 of their papers we have counts for
16 papers
Macroscopic quantum effects generated by the acoustic wave in a molecular magnet
Gwang-Hee Kim, E. M. Chudnovsky
We have shown that the size of the magnetization step due to resonant spin tunneling in a molecular magnet can be strongly affected by sound. The transverse acoustic wave can also…
Electronic Transport in Single-Molecule Magnets on Metallic Surfaces
Gwang-Hee Kim, Tae-Suk Kim
An electron transport is studied in the system which consists of scanning tunneling microscopy-single molecule magnet-metal. Due to quantum tunneling of magnetization in single-mol…
Level splittings in exchange-biased spin tunneling
Gwang-Hee Kim
The level splittings in a dimer with the antiferromagnetic coupling between two single-molecule magnets are calculated perturbatively for arbitrary spin. It is found that the excha…
Thermally assisted quantum vortex tunneling in the Hall and dissipative regime
Gwang-Hee Kim, Mincheol Shin
Quantum vortex tunneling is studied for the case where the Hall and the dissipative dynamics are simultaneously present. For a given temperature, the magnetization relaxation rate…
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…
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…