The paper introduces vector-field overlaps from quantum geometry to identify maximal mean-field susceptibilities and correlation lengths for orders in flat bands, with examples of hidden antiferromagnetic nesting and FFLO-like states checked via DQMC.
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iPEPS calculations establish a complete phase diagram for the square-kagome Heisenberg antiferromagnet, identifying four distinct valence-bond crystal phases plus imperfect and perfect ferrimagnetic states.
Experimental signatures of ferrimagnetism with antiferromagnetic correlations and finite polarization observed in ultracold fermions on a Lieb lattice at half filling.
citing papers explorer
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Identifying Instabilities with Quantum Geometry in Flat Band Systems
The paper introduces vector-field overlaps from quantum geometry to identify maximal mean-field susceptibilities and correlation lengths for orders in flat bands, with examples of hidden antiferromagnetic nesting and FFLO-like states checked via DQMC.
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Quantum phase diagram of the spin-$\frac{1}{2}$ Heisenberg antiferromagnet on the square-kagome lattice: a tensor network study
iPEPS calculations establish a complete phase diagram for the square-kagome Heisenberg antiferromagnet, identifying four distinct valence-bond crystal phases plus imperfect and perfect ferrimagnetic states.
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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.