Experimental signatures of ferrimagnetism with antiferromagnetic correlations and finite polarization observed in ultracold fermions on a Lieb lattice at half filling.
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In the α-T3 lattice with on-site asymmetry, mean-field theory shows a superconducting gap that grows as a power law with interaction strength at flat-band filling, while the geometric part of the superfluid weight grows linearly and is enhanced by tuning α.
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Ferrimagnetism of ultracold fermions in a multi-band Hubbard system
Experimental signatures of ferrimagnetism with antiferromagnetic correlations and finite polarization observed in ultracold fermions on a Lieb lattice at half filling.
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Superconductivity and geometric superfluid weight of a tunable flat band system
In the α-T3 lattice with on-site asymmetry, mean-field theory shows a superconducting gap that grows as a power law with interaction strength at flat-band filling, while the geometric part of the superfluid weight grows linearly and is enhanced by tuning α.