Surrogate model solver for impurity-induced superconducting subgap states
Virgil V. Baran, Emil J. P. Frost, Jens Paaske
DOI 10.1103/PhysRevB.108.L220506 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
A simple impurity solver is shown to capture impurity-induced superconducting subgap states in quantitative agreement with the numerical renormalization group and quantum Monte Carlo simulations. The solver is based on the exact diagonalization of a single-impurity Anderson model with discretized superconducting reservoirs including only a small number of effective levels. Their energies and couplings to the impurity d level are chosen so as to best reproduce the Matsubara frequency dependence of the hybridization function. We provide a number of critical benchmarks and demonstrate the solver's efficiency in combination with the reduced basis method [V. V. Baran and D. R. Nichita, Phys. Rev. B 107, 144503 (2023)] by calculating the phase diagram for an interacting three-terminal junction.
Similar papers
Surrogate model solver for impurity-induced superconducting subgap states
similarity 0.87Virgil V. Baran et al. · 2023 · arXiv:2307.11646
Source status unknown — claims are unverified
Evolution of the Andreev bands in the half-filled superconducting periodic Anderson model
similarity 0.86Vladislav Pokorný & Panch Ram
Source status unknown — claims are unverified
Postquench gap dynamics of two-band superconductors
similarity 0.85Tianbai Cui et al.
Source status unknown — claims are unverified
Quasiclassical theory of superconducting states under magnetic fields: Thermodynamic properties
similarity 0.84Hiroaki Kusunose
Source status unknown — claims are unverified
Time-dependent Ginzburg-Landau framework for sample-specific simulation of superconductors for radio-frequency applications
similarity 0.84Aiden V. Harbick & Mark K. Transtrum
Source status unknown — claims are unverified
First-principles-based s±-wave modeling for iron-based superconductors: Specific heat and nuclear magnetic relaxation rate
similarity 0.84N. Nakai et al.
Source status unknown — claims are unverified