Suppression of tunneling by interference in half-integer-spin particles.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Physical review letters
دوره 69 22 شماره
صفحات -
تاریخ انتشار 1992