Vortices in spinor cold exciton condensates with spin-orbit interaction
Liew, Timothy Chi Hin
Shelykh, Ivan A.
Date of Issue2014
School of Physical and Mathematical Sciences
We study theoretically the ground states of topological defects in a spinor four-component condensate of cold indirect excitons. We analyze possible ground-state solutions for different configurations of vortices and half vortices. We show that if only Rashba or Dresselhaus spin-orbit interaction (SOI) for electrons is present the stable states of topological defects can represent a cylindrically symmetric half vortex or half-vortex-antivortex pairs or a nontrivial pattern with warped vortices. In the presence of both Rashba and Dresselhaus SOI the ground state of a condensate represents a stripe phase and vortex type solutions become unstable.
Physical review B
© 2014 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 paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevB.89.035302]. 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.