Corpus ID: 237532341

Preformed Cooper Pairs in Flat Band Semimetals

  title={Preformed Cooper Pairs in Flat Band Semimetals},
  author={Alexander A. Zyuzin and A. Yu. Zyuzin},
We study conditions for the emergence of the preformed Cooper pairs in materials hosting flat bands. As a particular example, we consider time-reversal symmetric pseudospin-1 semimetal, with a pair of three-band crossing points at which a flat band intersects with a Dirac cone, and focus on the s-wave inter-node pairing channel. The nearly dispersionless nature of the flat band promotes local Cooper pair formation so that the system may be modelled as an array of superconducting grains. Due to… Expand

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