A class of spin injection-precession ultrafast nanodevices
arXiv:cond-mat/0310258 · doi:10.1063/1.1667002
Abstract
Spin valve ultrafast spin injection devices are described: an amplifier, a frequency multiplier, and a square-law detector. Their operation is based on injection of spin polarized electrons from one ferromagnet to another through a semiconductor layer and spin precession of the electrons in the semiconductor layer in a magnetic field induced by a (base) current in an adjacent nanowire. The base current can control the emitter current between the magnetic layers with frequencies up to several 100 GHz.
4 pages, 2 figures; minor typos corrected; to appear in Appl. Phys. Letters
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- Highly polarized injection luminescence in forward-biased ferromagnetic-semiconductor junctions at low spin polarization of current