DMRG simulations show a doublon-holon paired phase with d-wave symmetry emerging between spin-singlet, CDW, and eta-pairing phases in photodoped Mott insulators.
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First-principles calculation shows selective excitation of an IR phonon mode in La3Ni2O7 produces a small nonlinear shift that moves the Ni-O-Ni bond angle closer to 180 degrees.
A d_x2-y2 orbital bilayer t-J model with first-principles parameters unifies experimental Tc controls in La3Ni2O7 via particle-hole asymmetry and J_perp dependence, proposing electron doping to enhance Tc.
DFT-based tight-binding models and FRG calculations predict that reducing in-plane lattice constant or increasing out-of-plane constant in La3Ni2O7 films increases Fermi-level DOS and enhances Tc while preserving s± pairing.
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Doublon-Holon Pairing State in Photodoped Mott Insulators
DMRG simulations show a doublon-holon paired phase with d-wave symmetry emerging between spin-singlet, CDW, and eta-pairing phases in photodoped Mott insulators.