| |
| Current-Induced Magnetic Domain-Wall Motion by Spin Transfer Torque: Collective Coordinate Approach with Domain-Wall Width Variation |
| Journal of Magnetics, Volume 12, Number 1, 31 Mar 2007, Pages 1-6 |
Soon-Wook Jung(Department of Physics, Pohang University of Science and Technology), Hyun-Woo Lee*  (Department of Physics, Pohang University of Science and Technology) |
| Abstract |
| The spin transfer torque generated by a spin-polarized current can induce the shift of the magnetic domain-wall position. In this work, we study theoretically the current-induced domain-wall motion by using the collective coordinate approach [Gen Tatara and Hiroshi Kohno, Phys. Rev. Lett. 92, 86601 (2004)]. The approach is extended to include not only the domain-wall position and the polarization angle changes but also the domain-wall width variation. It is demonstrated that the width variation affects the critical current. |
| Keywords: spin transfer torque; collective coordinate; domain-wall motion; domain-wall width |
| DOI: 10.4283/JMAG.2007.12.1.1 |
| Full Text: PDF |
|
|
 |
|
|
