Theory of the Pseudospin Resonance in Semiconductor Bilayers

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Theory of the Pseudospin Resonance in Semiconductor Bilayers

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Title: Theory of the Pseudospin Resonance in Semiconductor Bilayers
Author: Abedinpour, Saeed H.; Polini, Marco; MacDonald, A. H.; Tanatar, B.; Vignale, Giovanni, 1957-
Keywords: electron states and collective excitations in multilayers
quantum wells
mesoscopic and nanoscale systems
Fermi gas
ferromagnetic, antiferromagnetic, and ferrimagnetic resonances
spin wave resonance
Date: 2007-11-14
Publisher: American Physical Society
Citation: Phys. Rev. Lett. 99, 206802 (2007) [4 pages]
Abstract: The pseudospin degree of freedom in a semiconductor bilayer gives rise to a collective mode analogous to the ferromagnetic-resonance mode of a ferromagnet. We present a many-body theory of the dependence of the energy and the damping of this mode on layer separation d. Based on these results, we discuss the possibilities of realizing transport-current driven pseudospin-transfer oscillators in semiconductors, and of using the pseudospin-transfer effect as an experimental probe of intersubband plasmons.
URI: http://hdl.handle.net/10355/7725
ISSN: 0031-9007

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