Torque anomalies at magnetization plateaux in quantum magnets with Dzyaloshinskii-Moriya interactions
| dc.creator | Manmana, S. R. | |
| dc.creator | Mila, F. | |
| dc.date | 2008-10-29 | |
| dc.date | 2009-02-02 | |
| dc.date.accessioned | 2026-07-07T12:36:20Z | |
| dc.date.available | 2026-07-07T12:36:20Z | |
| dc.description | We investigate the effect of Dzyaloshinskii-Moriya (DM) interactions on torque measurements of quantum magnets with magnetization plateaux in the context of a frustrated spin-1/2 ladder. Using extensive DMRG simulations, we show that the DM contribution to the torque is peaked at the critical fields, and that the total torque is non-monotonous if the DM interaction is large enough compared to the g-tensor anisotropy. More remarkably, if the DM vectors point in a principal direction of the g-tensor, torque measurements close to this direction will show well defined peaks even for small DM interaction, leading to a very sensitive way to detect the critical fields. We propose to test this effect in the two-dimensional plateau system SrCu$_2$(BO$_3$)$_2$. | |
| dc.description | published version | |
| dc.identifier | https://arxiv.org/abs/0810.5329 | |
| dc.identifier | http://arxiv.org/abs/0810.5329 | |
| dc.identifier | EPL 85, 27010 (2009) | |
| dc.identifier | doi:10.1209/0295-5075/85/27010 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/218059 | |
| dc.subject | Other Condensed Matter | |
| dc.title | Torque anomalies at magnetization plateaux in quantum magnets with Dzyaloshinskii-Moriya interactions | |
| dc.type | text |