Theory of the pseudospin resonance in semiconductor bilayers |
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Authors: | Abedinpour Saeed H Polini Marco MacDonald A H Tanatar B Tosi M P Vignale G |
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Institution: | NEST-CNR-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy. |
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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. |
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