Magnon Decay in Noncollinear Quantum Antiferromagnets
| dc.creator | Chernyshev, A. L. | |
| dc.creator | Zhitomirsky, M. E. | |
| dc.date | 2006-08-01 | |
| dc.date | 2006-11-14 | |
| dc.date.accessioned | 2026-07-07T07:19:30Z | |
| dc.date.available | 2026-07-07T07:19:30Z | |
| dc.description | Instability of the excitation spectrum of an ordered noncollinear Heisenberg antiferromagnet (AF) with respect to spontaneous two-magnon decays is investigated. We use a spin-1/2 AF on a triangular lattice as an example and examine the characteristic long- and short wave-length features of its zero-temperature spectrum within the 1/S-approximation. The kinematic conditions are shown to be crucial for the existence of decays and for overall properties of the spectrum. The XXZ and the J-J' generalizations of the model, as well as the role of higher-order corrections are discussed. | |
| dc.description | 4.0 pages, 4 figures, published version + updated reference | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0608035 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0608035 | |
| dc.identifier | Phys. Rev. Lett. 97, 207202 (2006) | |
| dc.identifier | doi:10.1103/PhysRevLett.97.207202 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/114647 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Magnon Decay in Noncollinear Quantum Antiferromagnets | |
| dc.type | text |