Hofstadter-Hubbard model with opposite magnetic fields: Bardeen-Cooper-Schrieffer pairing and superfluidity in the nearly flat butterfly bands
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DOI: 10.1103/physreva.96.043628
Abstract: Despite the multi-band spectrum of the widely-known Hofstadter butterfly, it turns out that the pairing correlations of the time-reversal-symmetric Hofstadter-Hubbard model are well-described by a single order parameter that is uniform in real space. By… read more here.
Keywords: hubbard model; nearly flat; butterfly; butterfly bands ... See more keywords