Yang Zhang

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cond-mat.str-el2026

Exact Nagaoka-to-spiral transition in the doped infinite-U triangular lattice

Yang Zhang, Cristian D. Batista

We study the single-hole infinite- $U$ Hubbard model on the triangular lattice with nearest- and next-nearest-neighbor hoppings $t_{1}$ and $t_{2}$ . A frustrating $t_{2}$ destabilizes Nag…

cond-mat.str-el2025

Antiferromagnetism and Tightly Bound Cooper Pairs Induced by Kinetic Frustration

Yixin Zhang, Cristian Batista, Yang Zhang

Antiferromagnetism and superconductivity are often viewed as competing orders in correlated electron systems. Here, we demonstrate that kinetic frustration in hole motion facilitat…