Phys. Rev. Lett. 83, 223 - 226 (1999)

Experimental Generation and Observation of Intrinsic Localized Spin Wave Modes in an Antiferromagnet

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U. T. Schwarz, L. Q. English, and A. J. Sievers
Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853-2501

Received 9 April 1999

By driving with a microwave pulse the lowest frequency antiferromagnetic resonance of the quasi-1D biaxial antiferromagnet (C₂H₅NH₃)₂CuCl₄ into an unstable region, intrinsic localized spin waves have been generated and detected in the spin wave gap. These findings are consistent with the prediction that nonlinearity plus lattice discreteness can lead to localized excitations with dimensions comparable to the lattice constant.

URL: http://link.aps.org/abstract/PRL/v83/p223
DOI: 10.1103/PhysRevLett.83.223
PACS: 76.50.+g, 05.45.-a, 75.50.Ee

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Phys. Rev. Lett. 83, 223 - 226 (1999)

Experimental Generation and Observation of Intrinsic Localized Spin Wave Modes in an Antiferromagnet

PRL Celebrates 50 Years