Spin-Imbalanced Pairing and Fermi Surface Deformation in Flat Bands

11 Jun 2018 Huhtinen Kukka-Emilia Tylutki Marek Kumar Pramod Vanhala Tuomas I. Peotta Sebastiano Törmä Päivi

We study the attractive Hubbard model with spin imbalance on two lattices featuring a flat band: the Lieb and kagome lattices. We present mean-field phase diagrams featuring exotic superfluid phases, similar to the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, whose stability is confirmed by dynamical mean-field theory (DMFT)... (read more)

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