2007/06/12 by Saeed H. Abedinpour, Marco Polini, A. H. MacDonald +4 · 24 citations
Physics and Astronomy · #Bilayer #Condensed matter physics #Ferromagnetism #Magnetic properties of thin films #Physics #Plasmon #Quantum and electron transport phenomena #Quantum mechanics #Quasiparticle #Resonance (particle physics) #Semiconductor #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.99.206802
published in Physical Review Letters 99(20), 206802 (American Physical Society) · 4+ pages, 3 figures, submitted
arxiv created 2007/06/12 · openalex publication_date 2007/11/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.