Phys. Rev. Lett. 93, 247202 (2004) [4 pages]Nonquantized Dirac Monopoles and Strings in the Berry Phase of Anisotropic Spin SystemsSee Also: Publisher's Note Received 26 April 2004; published 9 December 2004 The Berry phase of an anisotropic spin system that is adiabatically rotated along a closed circuit C is investigated. It is shown that the Berry phase consists of two contributions: (i) a geometric contribution which can be interpreted as the flux through C of a nonquantized Dirac monopole, and (ii) a topological contribution which can be interpreted as the flux through C of a Dirac string carrying a nonquantized flux, i.e., a spin analogue of the Aharonov-Bohm effect. Various experimental consequences of this novel effect are discussed. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.247202
DOI:
10.1103/PhysRevLett.93.247202
PACS:
75.30.Ds, 03.65.Vf, 14.80.Hv, 75.10.Jm
See AlsoPublisher's Note: Patrick Bruno, Publisher’s Note: Nonquantized Dirac Monopoles and Strings in the Berry Phase of Anisotropic Spin Systems [Phys. Rev. Lett. 93, 247202 (2004)], Phys. Rev. Lett. 94, 239903 (2005). |
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