Impurity-induced Shiba bound state in the BCS–BEC crossover regime of two-dimensional Fermi superfluid

Shao Siqi^{1, 2}, Zhou Kezhao^{3, †}, Zhang Zhidong^{1, 2}

Critical interaction parameter ε b as a function of b ↓ for b ↑ = 4.0 obtained by numerically solving Eq. (18).