期刊
APPLIED PHYSICS LETTERS
卷 94, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3081421
关键词
ferromagnetism; magnetic anisotropy; magnetic switching; magnetisation; spin-orbit interactions
资金
- Office of Basic Energy Sciences
We propose schemes of reversing the magnetization of a ferromagnet by electric fields alone, without charge or spin currents or external magnetic fields. The switching is triggered by picosecond manipulation of the atomic positions or subpicosecond distortion of the valence charge distribution, which through spin-orbit coupling modifies the magnetic anisotropy. We discuss how such time-even anisotropies can be used to switch the time-odd magnetization for in-plane and out-of-plane magnetization directions. In all cases the switching process is completely determined by the appropriately chosen orientation, magnitude, and temporal length of the electric field created by a voltage or photon pulse.
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