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Electrical control of ferromagnetic state |
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| Authors: | Leonid P Rokhinson Mason Overby Alexandr Chernyshov Yuli Lyanda-Geller Xinyu Liu Jacek K Furdyna |
| Institution: | 1. Department of Physics, Purdue University, West Lafayette, IN 47907, USA;2. Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA;3. Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA |
| Abstract: | We report experiments where magnetization in GaMnAs ferromagnetic semiconductor is manipulated via strain or electric current. In both cases, charge carrier holes become partially polarized due to the anisotropic modification of holes spectra caused by spin–orbit interactions, and this polarization exerts spin torque sufficient to rotate ferromagnetic domains. |
| Keywords: | Ferromagnetic semiconductor Spin polarization Spin&ndash orbit interaction Multiferroic |
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