Print Email Facebook Twitter Single-electron charge transfer into putative Majorana and trivial modes in individual vortices Title Single-electron charge transfer into putative Majorana and trivial modes in individual vortices Author Ge, Jian Feng (Universiteit Leiden) Bastiaans, K.M. (TU Delft QN/Otte Lab; TU Delft QN/Quantum Nanoscience; Universiteit Leiden; Kavli institute of nanoscience Delft) Chatzopoulos, Damianos (Universiteit Leiden) Cho, Doohee (Yonsei University) Tromp, Willem O. (Universiteit Leiden) Benschop, Tjerk (Universiteit Leiden) Niu, Jiasen (Universiteit Leiden) Gu, Genda (Brookhaven National Laboratory) Allan, Milan P. (Universiteit Leiden) Department QN/Quantum Nanoscience Date 2023 Abstract Majorana bound states are putative collective excitations in solids that exhibit the self-conjugate property of Majorana fermions—they are their own antiparticles. In iron-based superconductors, zero-energy states in vortices have been reported as potential Majorana bound states, but the evidence remains controversial. Here, we use scanning tunneling noise spectroscopy to study the tunneling process into vortex bound states in the conventional superconductor NbSe2, and in the putative Majorana platform FeTe0.55Se0.45. We find that tunneling into vortex bound states in both cases exhibits charge transfer of a single electron charge. Our data for the zero-energy bound states in FeTe0.55Se0.45 exclude the possibility of Yu–Shiba–Rusinov states and are consistent with both Majorana bound states and trivial vortex bound states. Our results open an avenue for investigating the exotic states in vortex cores and for future Majorana devices, although further theoretical investigations involving charge dynamics and superconducting tips are necessary. To reference this document use: http://resolver.tudelft.nl/uuid:6acdf01b-0adc-4e46-a05c-43ffb5d25707 DOI https://doi.org/10.1038/s41467-023-39109-w Source Nature Communications, 14 (1) Part of collection Institutional Repository Document type journal article Rights © 2023 Jian Feng Ge, K.M. Bastiaans, Damianos Chatzopoulos, Doohee Cho, Willem O. Tromp, Tjerk Benschop, Jiasen Niu, Genda Gu, Milan P. Allan Files PDF s41467_023_39109_w.pdf 1.25 MB Close viewer /islandora/object/uuid:6acdf01b-0adc-4e46-a05c-43ffb5d25707/datastream/OBJ/view