Enhancement of spin propagation due to interlayer exciton condensation

Abstract

We show that an interlayer exciton condensate doped into a strongly correlated Mott insulator exhibits a remarkable enhancement of the bandwidth of the magnetic excitations (triplons). This triplon is visible in the dynamical magnetic susceptibility and can be measured using resonant inelastic X-ray scattering. The bandwidth of the triplon scales with the exciton superfluid density, but only in the limit of strong correlations. As such the triplon bandwidth acts as a probe of exciton-spin interactions in the condensate.

5 pages, 3 figures

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Cited by in corpus (5)

• Excitonic condensation in systems of strongly correlated electrons
• Determinant quantum Monte Carlo study of exciton condensation in the bilayer Hubbard model
• Exciton condensation in strongly correlated electron bilayers
• How bilayer excitons can greatly enhance thermoelectric efficiency
• Dynamical response and competing orders in two-band Hubbard model