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arXiv · 1304.3643

Enhancement of spin propagation due to interlayer exciton condensation

Louk Rademaker·Jeroen van den Brink·Hans Hilgenkamp·Jan Zaanen
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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.

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Louk Rademaker, Jeroen van den Brink, Hans Hilgenkamp, Jan Zaanen. 2013-09-06. Enhancement of spin propagation due to interlayer exciton condensation. https://doi.org/10.1103/physrevb.88.121101

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