Magnetization quantum tunneling at excited levels for a biaxial spin system in an arbitrarily directed magnetic field
arXiv:cond-mat/9912379 · doi:10.1103/PhysRevB.62.3346
Abstract
The quantum tunneling of the magnetization vector between excited levels are studied theoretically in single-domain ferromagnetic nanoparticles with biaxial crystal symmetry placed in an external magnetic field at an arbitarily directed angle in the ZX plane. The temperature dependences of the tunneling frequency and the decay rate are clearly shown for each case.
19 pages, 2 figures, to be published in Phys. Rev. B (Augest 1st)
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