Coherent Magnetic Moment Reversal in Small Particles with Nuclear Spins

Details Coherent Magnetic Moment Reversal in Small Particles with Nuclear Spins Coherent Magnetic Moment Reversal in Small Particles with Nuclear Spins

1999-07-13

arxiv.org/abs/cond-mat/9907198v1

in "Tunneling in Complex Systems", S. Tomsovic, ed., (World-Scientific, Singapore, 1998)

Physics

Condensed Matter

8 embedded ps figures; article in tutorial volume from Workshop at Inst. Nucl. Theory, U. Washington, Seattle, Spring 1997

Scientific paper

A discrete WKB method is developed for calculating tunnel splittings in spin
problems. The method is then applied to the issue of how nuclear spins affect
the macroscopic quantum coherence of the total magnetic moment in small
magnetic particles. The results are compared with numerical work, and with
previous instanton based analytic approaches.

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