Enhancing the spin-transfer torque through proximity of quantum well states
| dc.creator | Theodonis, Ioannis | |
| dc.creator | Kalitsov, Alan | |
| dc.creator | Kioussis, Nicholas | |
| dc.date | 2007-03-29 | |
| dc.date | 2007-10-30 | |
| dc.date.accessioned | 2026-07-07T08:39:18Z | |
| dc.date.available | 2026-07-07T08:39:18Z | |
| dc.description | We predict that the spin-transfer, $T_{i,||}$, and field-like, $T_{i,\bot}$, components of the {\it local} spin torque are dramatically enhanced in double-barrier magnetic tunnel junctions. The {\it spin-mixing} enhancement is due to the energetic proximity of majority and minority quantum well states (QWS) of different quantum numbers within the bias window. $T_{i,||}$ exhibits a switch-on and switch-off step-like bias behavior when spin polarized QWS enter the bias window or exit the energy band, while $T_{i,\bot}$, changes sign between switch-on biases. The {\it net} $T_{\bot}$ exhibits an anomalous angular behavior due to the bias interplay of the bilinear and biquadratic effective exchange couplings. | |
| dc.description | 7 pages, 9 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0703789 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0703789 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/141028 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Enhancing the spin-transfer torque through proximity of quantum well states | |
| dc.type | text |