Enhancement of spin propagation due to interlayer exciton condensation

Louk Rademaker, J. van den Brink, H. Hilgenkamp, Jan Zaanen

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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.
Original languageUndefined
Article number121101
Pages (from-to)121101-1-121101-5
JournalPhysical review B: Condensed matter and materials physics
Issue number121101
Publication statusPublished - 2013


  • IR-89212
  • METIS-302119

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