Materials combining topologically non-trivial behavior and superconductivity offer a potential route for quantum computation. However, the set of available materials intrinsically realizing these properties are scarce. Recently, surface superconductivity has been reported in PtBi2 in its trigonal phase and an inherent Weyl semimetal phase has been predicted. Here, based on scanning tunneling microscopy experiments, we reveal the signature of topological Fermi arcs in the normal state patterns of the quasiparticle interference. We show that the scattering between Fermi arcs dominates the interference spectra, providing conclusive evidence for the relevance of Weyl fermiology for the surface electronic properties of trigonal PtBi2.
@article{arxiv.2407.15790,
title = {Fermi arcs dominating the electronic surface properties of trigonal PtBi$_2$},
author = {Sven Hoffmann and Sebastian Schimmel and Riccardo Vocaturo and Joaquin Puig and Grigory Shipunov and Oleg Janson and Saicharan Aswartham and Danny Baumann and Bernd Büchner and Jeroen van den Brink and Y. Fasano and Jorge I. Facio and C. Hess},
journal= {arXiv preprint arXiv:2407.15790},
year = {2024}
}