Spatially indirect exciton condensate in bilayer systems

ORAL

Abstract

Bilayer equilibrium exciton condensates have attracted attention in recent years because of their interesting and anomalous transport properties. Here we report on the microscopic derivation of bosonic effective Hamiltonians which include exciton-exciton interaction terms and account realistically for band-structure and dielectric environment effects. We describe in detail the microscopic origin of different contributions to exciton-exciton interaction. We apply our theory to the case of transition metal dichalcogenides, addressing specifically the role of the excitonic flavor multiplicity in that system.

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Authors

  • Fei Xue

    Department of Physics, University of Texas at Austin

  • Fengcheng Wu

    Department of Physics, University of Texas at Austin

  • Allan MacDonald

    University of Texas, Austin, University of Texas at Austin, UT Austin, Univ of Texas, Austin, Department of Physics, University of Texas at Austin