Current-induced dynamics of spiral magnet
| dc.creator | Goto, Kohei | |
| dc.creator | Katsura, Hosho | |
| dc.creator | Nagaosa, Naoto | |
| dc.date | 2008-07-18 | |
| dc.date.accessioned | 2026-07-07T09:51:16Z | |
| dc.date.available | 2026-07-07T09:51:16Z | |
| dc.description | We study the dynamics of the spiral magnet under the charge current by solving the Landau-Lifshitz-Gilbert equation numerically. In the steady state, the current ${\vec j}$ induces (i) the parallel shift of the spiral pattern with velocity $v=(β/α)j$ ($α$, $β$: the Gilbert damping coefficients), (ii) the uniform magnetization $M$ parallel or anti-parallel to the current depending on the chirality of the spiral and the ratio $β/ α$, and (iii) the change in the wavenumber $k$ of the spiral. These are analyzed by the continuum effective theory using the scaling argument, and the various nonequilibrium phenomena such as the chaotic behavior and current-induced annealing are also discussed. | |
| dc.description | 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0807.2901 | |
| dc.identifier | http://arxiv.org/abs/0807.2901 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/165229 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Materials Science | |
| dc.title | Current-induced dynamics of spiral magnet | |
| dc.type | text |