Self-sustained magnetoelectric oscillations in magnetic resonant tunneling structures

Details Self-sustained magnetoelectric oscillations in magnetic resonant tunneling structures Self-sustained magnetoelectric oscillations in magnetic resonant tunneling structures

2008-05-27

arxiv.org/abs/0805.4068v1

Phys. Rev. Lett. 101, 077202 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.101.077202

The dynamic interplay of transport, electrostatic, and magnetic effects in the resonant tunneling through ferromagnetic quantum wells is theoretically investigated. It is shown that the carrier-mediated magnetic order in the ferromagnetic region not only induces, but also takes part in intrinsic, robust, and sustainable high-frequency current oscillations over a large window of nominally steady bias voltages. This phenomenon could spawn a new class of quantum electronic devices based on ferromagnetic semiconductors.

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