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- W4301876996 abstract "Two-magnon Raman scattering intensity is obtained for two-dimensional spin-1/2 antiferromagnets in presence of hopping disorder. A consistent mode assignment scheme is prescribed which essentially establishes a correspondence between the hopping-disordered and the pure system. It is seen that a minute amount of disorder in hopping leads to a good agreement of the Raman lineshape experimentally obtained for the copper-oxide insulators such as ${rm {La_{2}CuO_{4}}}$. Also it is observed that a considerable asymmetry with respect to the two-magnon peak appears and the spectral intensity persisting much beyond $4J$ (where the joint magnon density of states peaks). This has been argued earlier by us [S. Basu and A. Singh, Phys. Rev. B, {bf {53}}, 6406 (1996)] to be arising due to highly asymmetric magnon-energy renormalization because of a cooperative effect arising from local correlation in hopping disorder." @default.
- W4301876996 created "2022-10-05" @default.
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- W4301876996 date "1998-09-18" @default.
- W4301876996 modified "2023-09-28" @default.
- W4301876996 title "Hopping-disorder-induced effects upon the two-Magnon Raman Scattering spectrum in an Antiferromagnet" @default.
- W4301876996 doi "https://doi.org/10.48550/arxiv.cond-mat/9809251" @default.
- W4301876996 hasPublicationYear "1998" @default.
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