Matthew P. A. Fisher, G. Grinstein, et al.
Physical Review Letters
Within a wide class of ferromagnetic and antiferromagnetic systems, quantum tunneling of magnetization direction is spin-parity dependent: it vanishes for magnetic particles with half-integer spin, but is allowed for integer spin. A coherent-state path-integral calculation shows that this topological effect results from interference between tunneling paths. © 1992 The American Physical Society.
Matthew P. A. Fisher, G. Grinstein, et al.
Physical Review Letters
G. Grinstein, C. Jayaprakash, et al.
Physica D: Nonlinear Phenomena
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Physical Review B
G. Grinstein, Robert A. Pelcovits
Physical Review Letters