Phys. Rev. Lett. 69, 3232–3235 (1992)Suppression of tunneling by interference in half-integer-spin particlesReceived 27 July 1992; published in the issue dated 30 November 1992 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 URL:
http://link.aps.org/doi/10.1103/PhysRevLett.69.3232
DOI:
10.1103/PhysRevLett.69.3232
PACS:
75.10.Jm, 03.65.Sq, 75.30.Gw, 75.60.Jp
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.