Abstract
We show that the quasicontinuous gapless spectrum of Andreev bound states in multiterminal semi-classical superconducting nanostructures exhibits a large number of topological singularities. We concentrate on Weyl points in a four-terminal nanostructure and compute their density and correlations in three-dimensional parameter space for a universal random matrix theory 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 quasicontinuous spectrum.
Original language | English |
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Article number | 014507 |
Number of pages | 6 |
Journal | Physical Review B |
Volume | 107 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2023 |