Phase separations induced by a trapping potential in one-dimensional fermionic systems as a source of core-shell structures

  title={Phase separations induced by a trapping potential in one-dimensional fermionic systems as a source of core-shell structures},
  author={Agnieszka Cichy and Konrad Jerzy Kapcia and Andrzej Ptok},
  journal={Scientific Reports},
Ultracold fermionic gases in optical lattices give a great opportunity for creating different types of novel states. One of them is phase separation induced by a trapping potential between different types of superfluid phases. The core-shell structures, occurring in systems with a trapping potential, are a good example of such separations. The types and the sequences of phases which emerge in such structures can depend on spin-imbalance, shape of the trap and on-site interaction strength. In… 
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