Nesting instability of gapless U(1) spin liquids with spinon Fermi pockets in two dimensions

  title={Nesting instability of gapless U(1) spin liquids with spinon Fermi pockets in two dimensions},
  author={Wilhelm G. F. Kruger and Lukas Janssen},
Quantum spin liquids are exotic states of matter that may be realized in frustrated quantum magnets and feature fractionalized excitations and emergent gauge fields. Here, we consider a gapless U(1) spin liquid with spinon Fermi pockets in two spatial dimensions. Such a state appears to be the most promising candidate to describe the exotic field-induced behavior observed in numerical simulations of the antiferromagnetic Kitaev honeycomb model. A similar such state may also be responsible for… 

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