Hopping-disorder-induced effects upon the two-Magnon Raman Scattering spectrum in an Antiferromagnet
| dc.creator | Basu, Saurabh | |
| dc.date | 1998-09-18 | |
| dc.date.accessioned | 2026-07-07T03:11:32Z | |
| dc.date.available | 2026-07-07T03:11:32Z | |
| dc.description | 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. | |
| dc.description | 8 pages lateX, 5 eps figures, 2 ps figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9809251 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9809251 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28610 | |
| dc.subject | Condensed Matter | |
| dc.title | Hopping-disorder-induced effects upon the two-Magnon Raman Scattering spectrum in an Antiferromagnet | |
| dc.type | text |