Prediction of the quantization of magnetic flux in double layer exciton superfluids

Abstract

Currently a way is lacking to detect unambiguously the possible phase coherence of an exciton condensate in an electron-hole double layer. Here we show that despite the fact that excitons are charge-neutral, the double layer exciton superfluid exhibits a diamagnetic response. In devices with specific circular geometry the magnetic flux threading between the layers must be quantized in units of $\frac{h}{e}{\chi }_m$ where ${\chi }_m$ is the diamagnetic susceptibility of the device. We discuss possible experimental realizations of the predicted unconventional flux quantization.

4 pages, 3 figures

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Cited by in corpus (1)

• Nonlocal Andreev reflection, fractional charge and current-phase relation in topological bilayer exciton condensate junctions