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Title: Spin Currents in a Coherent Exciton Gas
Authors: High, A. A.
Hammack, A. T.
Leonard, J. R.
Yang, Sen
Butov, L. V.
Ostatnický, T.
Vladimirova, M.
Kavokin, A. V.
Liew, Timothy Chi Hin
Campman, K. L.
Gossard, A. C.
Keywords: Excitons
Spin currents
Issue Date: 2013
Source: High, A. A., Hammack, A. T., Leonard, J. R., Yang, S., Butov, L. V., Ostatnický, T., et al. (2013). Spin Currents in a Coherent Exciton Gas. Physical Review Letters, 110(24), 246403-.
Series/Report no.: Physical Review Letters
Abstract: We report the observation of spin currents in a coherent gas of indirect excitons. The realized long-range spin currents originate from the formation of a coherent gas of bosonic pairs—a new mechanism to suppress the spin relaxation. The spin currents result in the appearance of a variety of polarization patterns, including helical patterns, four-leaf patterns, spiral patterns, bell patterns, and periodic patterns. We demonstrate control of the spin currents by a magnetic field. We also present a theory of coherent exciton spin transport that describes the observed exciton polarization patterns and indicates the trajectories of the spin currents.
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.110.246403
Rights: © 2013 American Physical Society. This paper was published in Physical Review Letters and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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