Order by distortion and string modes in pyrochlore antiferromagnet
| dc.creator | Tchernyshyov, O. | |
| dc.creator | Moessner, R. | |
| dc.creator | Sondhi, S. L. | |
| dc.date | 2001-08-29 | |
| dc.date.accessioned | 2026-07-07T02:42:34Z | |
| dc.date.available | 2026-07-07T02:42:34Z | |
| dc.description | We study the effects of magnetoelastic couplings on pyrochlore antiferromagnets. We employ Landau theory, extending an investigation begun by Yamashita and Ueda for the case of S=1, and semiclassical analyses to argue that such couplings generate bond order via a spin--Peierls transition. This is followed by, or concurrent with, a transition into one of several possible low-temperature Neel phases, with most simply collinear, but also coplanar or mixed spin patterns. In a collinear Neel phase, a dispersionless string-like magnon mode dominates the resulting excitation spectrum, providing a distinctive signature of the parent geometrically frustrated state. We comment on the experimental situation. | |
| dc.description | 5 pages, 5 inline figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0108505 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0108505 | |
| dc.identifier | Phys. Rev. Lett. 88, 067203 (2002) | |
| dc.identifier | doi:10.1103/PhysRevLett.88.067203 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/18197 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Order by distortion and string modes in pyrochlore antiferromagnet | |
| dc.type | text |