Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor FeTe0.55Se0.45

Damianos Chatzopoulos; Doohee Cho; Koen M. Bastiaans; Gorm O. Steffensen; Damian Bouwmeester; Alireza Akbari; Genda Gu; Jens Paaske; Brian M. Andersen; Milan P. Allan

doi:10.1038/s41467-020-20529-x

Nature Communications (Jan 2021)

Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor FeTe0.55Se0.45

Damianos Chatzopoulos,
Doohee Cho,
Koen M. Bastiaans,
Gorm O. Steffensen,
Damian Bouwmeester,
Alireza Akbari,
Genda Gu,
Jens Paaske,
Brian M. Andersen,
Milan P. Allan

Affiliations

Damianos Chatzopoulos: Leiden Institute of Physics, Leiden University
Doohee Cho: Leiden Institute of Physics, Leiden University
Koen M. Bastiaans: Leiden Institute of Physics, Leiden University
Gorm O. Steffensen: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen
Damian Bouwmeester: Leiden Institute of Physics, Leiden University
Alireza Akbari: Max Planck Institute for the Chemical Physics of Solids
Genda Gu: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
Jens Paaske: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen
Brian M. Andersen: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen
Milan P. Allan: Leiden Institute of Physics, Leiden University

DOI: https://doi.org/10.1038/s41467-020-20529-x
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 8

Abstract

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The zero-bias state in FeTe0.55Se0.45 is conjectured to be related to Majorana physics, but most in-gap impurity states are not well understood. Here, the authors detect spatially dispersing Yu-Shiba-Rusinov states which can be tuned using an STM tip with varying tip-sample distance.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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