Local Chern marker of smoothly confined Hofstadter fermions

  title={Local Chern marker of smoothly confined Hofstadter fermions},
  author={Urs Gebert and Bernhard Irsigler and W. Hofstetter},
  journal={arXiv: Quantum Gases},
  • Urs Gebert, Bernhard Irsigler, W. Hofstetter
  • Published 2019
  • Physics
  • arXiv: Quantum Gases
  • The engineering of topological non-trivial states of matter, using cold atoms, has made great progress in the last decade. Driven by experimental successes, it has become of major interest in the cold atom community. In this work we investigate the time-reversal invariant Hofstadter model with an additional confining potential. By calculating a local spin Chern marker we find that topologically non-trivial phases can be observed in all considered trap geometries. This holds also for spin-orbit… CONTINUE READING

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