Proposal for a ferromagnetic multiwell spin oscillator

Ertler, Christian; Pötz, Walter; Fabian, Jaroslav
July 2010
Applied Physics Letters;7/26/2010, Vol. 97 Issue 4, p042104
Academic Journal
The highly nonlinear coupling of transport and magnetic properties in a multiwell heterostructure, which comprises ferromagnetic quantum wells made of diluted magnetic semiconductors, is theoretically investigated. The interplay of resonant tunneling and carrier-mediated ferromagnetism in the magnetic wells induces very robust, self-sustained current and magnetization oscillations. Over a large window of steady bias voltages the spin polarization of the collector current is oscillating between positive and negative values, realizing a spin oscillator device.


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