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APS » Journals » Phys. Rev. B » Volume 54 » Issue 18
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Phys. Rev. B 54, R12665–R12668 (1996)

Intrinsic localized spin-wave modes in antiferromagnetic chains with single-ion easy-axis anisotropy

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R. Lai, S. A. Kiselev*, and A. J. Sievers
Laboratory of Atomic and Solid State Physics and Materials Science Center, Cornell University, Ithaca, New York 14853-2501

Received 15 August 1996; published in the issue dated 1 November 1996

The dynamical properties of intrinsic localized spin-wave modes (ILSM's) in perfect antiferromagnetic chains of classical spins with on-site easy-axis anisotropy are investigated. Only ILSM's of odd parity exist below the plane-wave magnon frequency band. The degree of localization increases as either the maximum spin deviation or the ratio of the anisotropy constant to the exchange coupling constant, D/J, increases. Traveling ILSM's can also be excited; however, they become pinned for large D/J.

© 1996 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.54.R12665
DOI:
10.1103/PhysRevB.54.R12665
PACS:

*Permanent address: Institute of Spectroscopy of Russian Academy of Sciences, Troitsk, Moscow 142092, Russia.

 
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