Fluctuating charge-density-wave correlations in the three-band Hubbard model

• 成果类型: Article
• 署名作者: Mai, Peizhi; Cohen-Stead, Benjamin; Maier, Thomas A.; Johnston, Steven
• 署名单位: University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign; University of Tennessee System; University of Tennessee Knoxville; University of Tennessee System; University of Tennessee Knoxville; United States Department of Energy (DOE); Oak Ridge National Laboratory
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-12026
• DOI: 10.1073/pnas.2408717121
• 发表日期: 2024-12-10
• 关键词: transition-temperature; superconductivity; ORDER; stripes; gap

摘要

The high-temperature superconducting cuprates host unidirectional spin- and charge- density-wave orders that can intertwine with superconductivity in nontrivial ways. While the charge components of these stripes have now been observed in nearly all cuprate families, their detailed evolution with doping varies across different materials and at high and low temperatures. We address this problem using nonperturbative determinant quantum Monte Carlo calculations for the three-band Hubbard model. Using an efficient implementation, we can resolve the model's fluctuating spin and charge modulations and map their evolution as a function of the charge transfer energy and doping. We find that the incommensurability of the charge modulations is decoupled from the spin modulations and decreases with hole doping, consistent with experimental measurements at high temperatures. These findings support the proposal that the high-temperature charge correlations are distinct from the intertwined stripe order observed at low-temperature and in the single-band Hubbard model.