Vortices in spinor cold exciton condensates with spin-orbit interaction

Article

关键词: BOSE-EINSTEIN CONDENSATION;    COHERENCE;    DYNAMICS;    GAS;   

DOI  :  10.1103/PhysRevB.89.035302

来源: SCIE

【 摘 要 】

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.

【 授权许可】

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