AI Insight
This study investigates the pseudogap phenomenon using the Emery model (also known as the three-band Hubbard model), which incorporates copper and oxygen orbitals in the CuO₂ planes characteristic of cuprate superconductors. The researchers track the emergence and disappearance of the pseudogap as a function of doping and temperature, providing new theoretical insights into this poorly understood phase of matter. The findings suggest that the interplay between copper d-orbitals and oxygen p-orbitals plays a critical role in shaping the pseudogap regime, offering a more realistic microscopic picture than simpler single-band models.
Why it matters
Understanding the pseudogap phase is considered one of the central unsolved problems in condensed matter physics, as it is believed to be closely linked to high-temperature superconductivity in cuprates. Resolving its origins could guide the rational design of new materials with higher superconducting transition temperatures, with potential applications in lossless energy transmission and quantum computing.
Source: Rise and fall of the pseudogap in the Emery model, insights for cuprates