Coherent Magnetic Moment Reversal in Small Particles with Nuclear Spins
Abstract
Description
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.
8 embedded ps figures; article in tutorial volume from Workshop at Inst. Nucl. Theory, U. Washington, Seattle, Spring 1997
8 embedded ps figures; article in tutorial volume from Workshop at Inst. Nucl. Theory, U. Washington, Seattle, Spring 1997