Magnetization quantum tunneling at excited levels for a biaxial spin system in an arbitrarily directed magnetic field

Details Magnetization quantum tunneling at excited levels for a biaxial spin system in an arbitrarily directed magnetic field Magnetization quantum tunneling at excited levels for a biaxial spin system in an arbitrarily directed magnetic field

1999-12-21

arxiv.org/abs/cond-mat/9912379v2

Phys. Rev. B 62, 3346-3353 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

19 pages, 2 figures, to be published in Phys. Rev. B (Augest 1st)

Scientific paper

10.1103/PhysRevB.62.3346

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.

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