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.
The superconducting T_c of La3Ni2O7 is controlled by the d_x2-y2 orbital filling and the interlayer magnetic exchange J_perp, so clean electron doping should raise T_c.
DFT+DMFT calculations find orbital-dependent mass renormalizations, a doping-driven Lifshitz transition with self-doping, and enhanced spin fluctuations suggesting stripe order in La3Ni2O7.
Multiband effects and orbital-selective damping in bilayer nickelates produce pronounced temperature dependence in the Hall coefficient via the quasi-quantum metric contribution to transport.
Seven-orbital FLEX calculation on pressurized infinite-layer nickelate membrane attributes monotonic Tc rise to mitigation of excess electron correlations from low Ni valence.
DFT+DMFT shows orbital-selective Mott insulation in single-layer Ni eg states and strongly renormalized quasiparticles (m*/m ~3.5-4.2) in bilayer Ni of La5Ni3O11, plus competing spin-charge density wave stripes at Q=(1/3,1/3) and (1/4,1/4).
citing papers explorer
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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.
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Optical control of the crystal structure in the bilayer nickelate superconductor La3Ni2O7 via nonlinear phononics
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.
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Filling and Interlayer Superexchange Control Superconductivity in La$_3$Ni$_2$O$_7$
The superconducting T_c of La3Ni2O7 is controlled by the d_x2-y2 orbital filling and the interlayer magnetic exchange J_perp, so clean electron doping should raise T_c.
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Effect of doping on the electronic structure, orbital-dependent renormalizations, and magnetic correlations in bilayer La$_3$Ni$_2$O$_7$
DFT+DMFT calculations find orbital-dependent mass renormalizations, a doping-driven Lifshitz transition with self-doping, and enhanced spin fluctuations suggesting stripe order in La3Ni2O7.
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Impact of multiband effects on non-Fermi-liquid transport phenomena in bilayer nickelates
Multiband effects and orbital-selective damping in bilayer nickelates produce pronounced temperature dependence in the Hall coefficient via the quasi-quantum metric contribution to transport.
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Theoretical study of superconductivity in freestanding infinite-layer nickelate membranes under pressure: mitigation of excess correlation enhances $T_c$
Seven-orbital FLEX calculation on pressurized infinite-layer nickelate membrane attributes monotonic Tc rise to mitigation of excess electron correlations from low Ni valence.
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Electronic structure, quasiparticle renormalizations, and magnetic correlations in the alternating single-layer bilayer nickelate La$_5$Ni$_3$O$_{11}$
DFT+DMFT shows orbital-selective Mott insulation in single-layer Ni eg states and strongly renormalized quasiparticles (m*/m ~3.5-4.2) in bilayer Ni of La5Ni3O11, plus competing spin-charge density wave stripes at Q=(1/3,1/3) and (1/4,1/4).