Robust charge-density-wave correlations in the electron-doped single-band Hubbard model
Journal Article
·
· Nature Communications
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Flatiron Institute, New York, NY (United States)
- Florida State Univ., Tallahassee, FL (United States)
- Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Argonne Leadership Computing Facility (ALCF); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
- Sponsoring Organization:
- USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; AC05-00OR22725; SC0022297; SC0022311
- OSTI ID:
- 1975360
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 14; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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