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Title: Half-skyrmion spin textures in polariton microcavities
Authors: Cilibrizzi, P.
Sigurdsson, H.
Liew, Timothy Chi Hin
Ohadi, H.
Askitopoulos, A.
Brodbeck, S.
Schneider, C.
Shelykh, I. A.
Höfling, S.
Ruostekoski, J.
Lagoudakis, P.
Keywords: Exciton Polariton
Issue Date: 2016
Source: Cilibrizzi, P., Sigurdsson, H., Liew, T. C. H., Ohadi, H., Askitopoulos, A., Brodbeck, S., et al. (2016). Half-skyrmion spin textures in polariton microcavities. Physical Review B, 94, 045315-.
Series/Report no.: Physical Review B
Abstract: We study the polarization dynamics of a spatially expanding polariton condensate under nonresonant linearly polarized optical excitation. The spatially and temporally resolved polariton emission reveals the formation of nontrivial spin textures in the form of a quadruplet polarization pattern both in the linear and circular Stokes parameters, and an octuplet in the diagonal Stokes parameter. The continuous rotation of the polariton pseudospin vector through the condensate due to TE-TM splitting exhibits an ordered pattern of half-skyrmions associated with a half-integer topological number. A theoretical model based on a driven-dissipative Gross-Pitaevskii equation coupled with an exciton reservoir describes the dynamics of the nontrivial spin textures through the optical spin-Hall effect.
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.94.045315
Schools: School of Physical and Mathematical Sciences 
Rights: © 2016 American Physical Society. This paper was published in Physical Review B 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
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