Spin-triplet pairing induced by near-neighbor attraction in the extended Hubbard model for cuprate chain

Abstract

Recent experiments have identified the underlying model of one-dimensional cuprate chains as the extended Hubbard model with attractive near-neighbor interactions. Here, the authors use many-body calculations to create an exact ground-state phase diagram of this model, demonstrating a rich diversity of exotic quantum states, and providing valuable guidance for realizing unconventional superconductivity in the system.