Spin-flop transitions and spin-wave gaps in La_2CuO_4
| dc.creator | Luscher, Andreas | |
| dc.creator | Sushkov, Oleg P. | |
| dc.date | 2006-03-03 | |
| dc.date | 2006-05-13 | |
| dc.date.accessioned | 2026-07-07T07:41:37Z | |
| dc.date.available | 2026-07-07T07:41:37Z | |
| dc.description | We study the spin-wave spectrum and the spin-flop transitions in La_2CuO_4 in a uniform magnetic field at zero temperature. Using the non-linear sigma-model, we show that a field applied along the orthorhombic b direction leads to a two-step rotation of the staggered magnetization, first in the bc and then in the ac plane, until the order parameter is completely aligned along the c axis. In contrast, for a perpendicular magnetic field, we find a conventional spin-flop transition induced by the competition between the field and the interlayer coupling. A comparison with recent measurements of the field-dependence of the in-plane spin-wave gap shows a beautiful agreement between theory and experiments. | |
| dc.description | 7 pages, 3 figures; added reference | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0603061 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0603061 | |
| dc.identifier | Phys. Rev. B 74, 064412 (2006) | |
| dc.identifier | doi:10.1103/PhysRevB.74.064412 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/122175 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Spin-flop transitions and spin-wave gaps in La_2CuO_4 | |
| dc.type | text |