2024/06/02 by Hongdao Zhuge, Liang Si, Zhuge, Hongdao +3
Chemistry · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Inorganic Fluorides and Related Compounds #Materials Science (cond-mat.mtrl-sci) #Physics of Superconductivity and Magnetism #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con)
paper · pdf · doi:10.48550/arxiv.2406.00731
openalex publication_date 2024/06/02 · openalex created_date 2024/06/07 · openalex updated_date 2026/08/01
Recent experiments have revealed the substantial impact of broken rotational symmetry on the superconductivity. In the pursuit of understanding the role played by this symmetry breaking particularly in cuprate and nickelate superconductors on their superconductivity, we investigated two characteristic symmetry breaking mechanisms arising from (1) structurally orthogonal distortions from C4 to C2 symmetry and (2) anisotropic hybridization between dx2-y2 orbital and an additional metallic band within the framework of the Hubbard model by employing dynamic cluster quantum Monte Carlo calculations. We discovered that the anisotropy is generically detrimental to the d-wave pairing so that the experimental findings of much lower superconducting Tc of infinite-layer nickelates compared with the cuprates may be connected to the intrinsic anisotropy. Our exploration sheds light on the fundamental anisotropy factors governing superconductivity in nickelates and cuprates and offer insights contributing to the broader understanding of unconventional superconductors in anisotropic environment.