Flat spin wave dispersion in a triangular antiferromagnet
| dc.creator | Starykh, Oleg A. | |
| dc.creator | Chubukov, Andrey V. | |
| dc.creator | Abanov, Alexander G. | |
| dc.date | 2006-08-01 | |
| dc.date | 2006-11-16 | |
| dc.date.accessioned | 2026-07-07T07:19:28Z | |
| dc.date.available | 2026-07-07T07:19:28Z | |
| dc.description | The excitation spectrum of a S=1/2 2D triangular quantum antiferromagnet is studied using 1/S expansion. Due to the non-collinearity of the classical ground state significant and non-trivial corrections to the spin wave spectrum appear already in the first order in 1/S in contrast to the square lattice antiferromagnet. The resulting magnon dispersion is almost flat in a substantial portion of the Brillouin zone. Our results are in quantitative agreement with recent series expansion studies by Zheng, Fjaerestad, Singh, McKenzie, and Coldea [PRL 96, 057201 (2006) and cond-mat/0608008]. | |
| dc.description | 4.1 pages, 13 figures; v2 - as published, references updated | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0608002 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0608002 | |
| dc.identifier | Phys. Rev. B 74, 180403(R) (2006) | |
| dc.identifier | doi:10.1103/PhysRevB.74.180403 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/114639 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Statistical Mechanics | |
| dc.title | Flat spin wave dispersion in a triangular antiferromagnet | |
| dc.type | text |