Phys. Rev. Lett. 83, 223–226 (1999)Experimental Generation and Observation of Intrinsic Localized Spin Wave Modes in an AntiferromagnetReceived 9 April 1999; published in the issue dated 5 July 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. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.223
DOI:
10.1103/PhysRevLett.83.223
PACS:
76.50.+g, 05.45.-a, 75.50.Ee
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