Abundance of Weyl points in semiclassical multi-terminal superconducting nanostructures
Mesoscale and Nanoscale Physics
2021-12-30 v1
Abstract
We show that the quasi-continuous gapless spectrum of Andreev bound states in multi-terminal semi-classical superconducting nanostructures exhibits a big number of topological singularities. We concentrate on Weyl points in a 4-terminal nanostructure, compute their density and correlations in 3D parameter space for a universal RMT model as well as for the concrete nanostructures described by the quantum circuit theory. We mention the opportunities for experimental observation of the effect in a quasi-continuous spectrum.
Keywords
Cite
@article{arxiv.2112.13928,
title = {Abundance of Weyl points in semiclassical multi-terminal superconducting nanostructures},
author = {Hristo Barakov and Yuli V. Nazarov},
journal= {arXiv preprint arXiv:2112.13928},
year = {2021}
}