Pairing phase diagram for electron-doped cuprates in the square-lattice $t-U-V$ Hubbard model
Zhangkai Cao; Shuning Tan; Ji Liu; Xiaosen Yang; Tao Ying; Ho-Kin Tang; Cho-Tung Yip · 2025 · arXiv
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Abstract (excerpt)
Motivated by significant discrepancies between experimental observations of electron-doped cuprates and numerical results of the Hubbard model, we investigate the role of nearest-neighbor (NN) electron interactions $V$ by studying the $t-U-V$ model on square lattices. Upon doping $δ$= 0.153, by using constrained path quantum Monte Carlo (CPQMC) method, we find that NN electron attraction $V$ can notably drive an exotic $p$-wave spin-triplet pairing, while the NN electron repulsion $V$ will suppress the $d_{x^2-y^2}$-wave ($d$-wave) pairing and triggers the $d_{xy}$-wave pairing. Especially in
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Metadata source: arXiv