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Physical Review A - AMO
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.
David P. DiVincenzo, Peter W. Shor, et al.
Physical Review A - AMO
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Physical Review A - AMO
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Physica D: Nonlinear Phenomena
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