Spin waves in semiconductor microcavities

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6 Citations (Scopus)

Abstract

We show theoretically that a weakly interacting gas of spin-polarized exciton-polaritons in a semiconductor microcavity supports propagation of spin waves. The spin waves are characterized by a parabolic dispersion at small wave vectors which is governed by the polariton-polariton interaction constant. Due to spin anisotropy of polariton-polariton interactions the dispersion of spin waves depends on the orientation of the total polariton spin. For the same reason, the frequency of homogeneous spin precession/polariton spin resonance depends on their polarization degree.
Original languageEnglish
Article number161307
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number16
DOIs
Publication statusPublished - 2015

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