Robust charge-density wave correlations in the electron-doped single-band Hubbard model

Abstract

There is growing evidence that the hole-doped single-band Hubbard and $t$-$J$ models do not have a superconducting ground state reflective of the high-temperature cuprate superconductors but instead have striped spin- and charge-ordered ground states. Nevertheless, it is proposed that these models may still provide an effective low-energy model for electron-doped materials. Here we study the finite temperature spin and charge correlations in the electron-doped Hubbard model using quantum Monte Carlo dynamical cluster approximation calculations and contrast their behavior with those found on the hole-doped side of the phase diagram. We find evidence for a charge modulation with both checkerboard and unidirectional components decoupled from any spin-density modulations. These correlations are inconsistent with a weak-coupling description based on Fermi surface nesting, and their doping dependence agrees qualitatively with resonant inelastic x-ray scattering measurements. Our results provide evidence that the single-band Hubbard model describes the electron-doped cuprates.

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Cited by in corpus (7)

• Ab initio quantum many-body description of superconducting trends in the cuprates
• Fragmented superconductivity in the Hubbard model as solitons in Ginzburg-Landau theory
• One- and two-particle correlation functions in the cluster perturbation theory for cuprates
• Fluctuating charge-density-wave correlations in the three-band Hubbard model
• Twisting the Hubbard model into the Momentum-Mixing Hatsugai-Kohmoto Model
• Structural complexity of snapshots of 2D Fermi-Hubbard systems
• Thermal Tensor Network Simulations of Lattice Fermions with Fixed Filling