Flux quantization in double layer exciton superfluids
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Flux Quantization in Double Layer Exciton Superfluids. Louk Rademaker, Arnemuiden 16 June 2010. Overview. What are double layer excitons? Exciton superfluid theory Flux quantization Experimental realization. Double layer excitons. Superfluid theory I. Order parameter

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Flux quantization in double layer exciton superfluids

Flux Quantization in Double Layer Exciton Superfluids

Louk Rademaker, Arnemuiden 16 June 2010


Overview
Overview

  • What are double layer excitons?

  • Exciton superfluid theory

  • Flux quantization

  • Experimental realization



Superfluid theory i
Superfluid theory I

  • Order parameter

  • Quantization of circular currents


Superfluid theory ii
Superfluid theory II

  • Magnetic field induces current

  • Current induces magnetic field

  • Diamagnetism in between layers

Be

j

Bi

j



Quantization realizable
Quantization: Realizable?

  • Phase slip effect

  • Phase pinning

  • Numbers


Realization oxides
Realization: Oxides

Prof. Hans Hilgenkamp(University of Twente)



Conclusion
Conclusion

  • Double layer exciton superfluid acts as a diamagnet

  • Ring-shaped structure gives unconventional flux quantization

  • Realizable with oxides or graphene


Thanks to

Thanks to …

Prof. Hans Hilgenkamp(University of Twente)

Prof. Jan Zaanen(Lorentz Institute, Leiden)

… and you for your attention!


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