Quantum spin tunneling of magnetization in small ferromagnetic particles

Details Quantum spin tunneling of magnetization in small ferromagnetic particles Quantum spin tunneling of magnetization in small ferromagnetic particles

2007-02-24

arxiv.org/abs/cond-mat/0702572v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages

Scientific paper

A new quantum approach is presented that can account for the description of small ferromagnetic particles magnetization tunneling. An estimate of the saturation value of an external applied magnetic field along the easy axis is obtained. An analytic expression for the tunneling factor in the absence of an external magnetic field is deduced from the present approach that also allows to obtain the crossover temperature characterizing the regime where tunneling is dominated by the quantum effects.

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