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

Area of Science:

• Condensed Matter Physics
• Materials Science
• Quantum Mechanics

Background:

• High-temperature superconducting cuprates display complex spin and charge-density-wave orders.
• These orders can intertwine with superconductivity, influencing material properties.
• The evolution of charge stripe components varies with doping and temperature across cuprate families.

Purpose of the Study:

• To investigate the evolution of spin and charge modulations in superconducting cuprates.
• To understand the relationship between charge and spin components of density waves.
• To explore the impact of doping and charge transfer energy on these orders.

Main Methods:

• Utilized nonperturbative determinant quantum Monte Carlo (QMC) calculations.
• Employed an efficient QMC implementation to resolve fluctuating spin and charge modulations.
• Analyzed the three-band Hubbard model to simulate cuprate behavior.

Main Results:

• Charge modulations were found to be decoupled from spin modulations.
• The incommensurability of charge modulations decreases with increasing hole doping.
• Results align with high-temperature experimental observations.

Conclusions:

• High-temperature charge correlations appear distinct from low-temperature intertwined stripe order.
• The findings support a nuanced understanding of competing orders in cuprates.
• The study provides insights into the complex interplay of electronic orders in high-temperature superconductors.