Quantum-classical crossover of the escape rate in the biaxial nanomagnets with a higher order symmetry
Department of Physics, Sejong University, 143-747 Seoul, Republic of Korea
2 Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, 305-701 Daejeon, Republic of Korea
Corresponding author: b email@example.com
Revised: 17 June 2011
Published online: 17 August 2011
The crossover of the escape rate between thermally assisted and pure quantum tunneling is studied in biaxial magnetic nanoparticles with a high symmetry. The sequential crossover occurs in the presence of field applied along the hard axis. Molecular nanomagnets with larger transverse anisotropy are expected to make the peculiar crossovers more feasible in experiment.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2011