In CsCr6Sb6, Mott splitting of the kagome flat band creates local moments that hybridize with conduction electrons at low temperature, shown by temperature-dependent STS Fano lineshapes near EF and ARPES quasiparticle peaks that vanish together while high-energy humps persist.
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A non-Gaussian variational ansatz computes 2D Fermi polaron ground-state energy, residue, and spectral functions, agreeing qualitatively with Monte Carlo while revealing oscillatory or relaxational dynamics to the molecular state.
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Mott-Derived Local Moments and Kondo Hybridization in a d-electron Kagome lattice
In CsCr6Sb6, Mott splitting of the kagome flat band creates local moments that hybridize with conduction electrons at low temperature, shown by temperature-dependent STS Fano lineshapes near EF and ARPES quasiparticle peaks that vanish together while high-energy humps persist.
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Efficient variational approach to the Fermi polaron problem in two dimensions, both in and out of equilibrium
A non-Gaussian variational ansatz computes 2D Fermi polaron ground-state energy, residue, and spectral functions, agreeing qualitatively with Monte Carlo while revealing oscillatory or relaxational dynamics to the molecular state.