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Precursors of Majorana modes and their length-dependent energy oscillations probed at both ends of atomic Shiba chains

Precursors of Majorana modes and their length-dependent energy oscillations probed at both ends of atomic Shiba chains

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SCHNEIDER, Lucas, Philip BECK, Jannis NEUHAUS-STEINMETZ, Levente RÓZSA, Thore POSSKE, Jens WIEBE, Roland WIESENDANGER, 2022. Precursors of Majorana modes and their length-dependent energy oscillations probed at both ends of atomic Shiba chains. In: Nature Nanotechnology. Nature Publishing Group. 17(4), pp. 384-389. ISSN 1748-3387. eISSN 1748-3395. Available under: doi: 10.1038/s41565-022-01078-4

@article{Schneider2022-04Precu-56973, title={Precursors of Majorana modes and their length-dependent energy oscillations probed at both ends of atomic Shiba chains}, year={2022}, doi={10.1038/s41565-022-01078-4}, number={4}, volume={17}, issn={1748-3387}, journal={Nature Nanotechnology}, pages={384--389}, author={Schneider, Lucas and Beck, Philip and Neuhaus-Steinmetz, Jannis and Rózsa, Levente and Posske, Thore and Wiebe, Jens and Wiesendanger, Roland} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/56973"> <dc:creator>Wiesendanger, Roland</dc:creator> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/56973"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-03-24T07:51:55Z</dc:date> <dc:contributor>Neuhaus-Steinmetz, Jannis</dc:contributor> <dc:contributor>Wiesendanger, Roland</dc:contributor> <dc:contributor>Rózsa, Levente</dc:contributor> <dc:contributor>Wiebe, Jens</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-03-24T07:51:55Z</dcterms:available> <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by/4.0/"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:rights>Attribution 4.0 International</dc:rights> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/56973/1/Schneider_2-1nz0fuxjb7vci9.pdf"/> <dcterms:abstract xml:lang="eng">Isolated Majorana modes (MMs) are highly non-local quantum states with non-Abelian exchange statistics, which localize at the two ends of finite-size 1D topological superconductors of sufficient length. Experimental evidence for MMs is so far based on the detection of several key signatures: for example, a conductance peak pinned to the Fermi energy or an oscillatory peak splitting in short 1D systems when the MMs overlap. However, most of these key signatures were probed only on one of the ends of the 1D system, and firm evidence for an MM requires the simultaneous detection of all the key signatures on both ends. Here we construct short atomic spin chains on a superconductor—also known as Shiba chains—up to a chain length of 45 atoms using tip-assisted atom manipulation in scanning tunnelling microscopy experiments. We observe zero-energy conductance peaks localized at both ends of the chain that simultaneously split off from the Fermi energy in an oscillatory fashion after altering the chain length. By fitting the parameters of a low-energy model to the data, we find that the peaks are consistent with precursors of MMs that evolve into isolated MMs protected by an estimated topological gap of 50 μeV in chains of at least 35 nm length, corresponding to 70 atoms.</dcterms:abstract> <dc:language>eng</dc:language> <dc:creator>Rózsa, Levente</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:creator>Beck, Philip</dc:creator> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/56973/1/Schneider_2-1nz0fuxjb7vci9.pdf"/> <dcterms:issued>2022-04</dcterms:issued> <dc:creator>Posske, Thore</dc:creator> <dc:contributor>Schneider, Lucas</dc:contributor> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:contributor>Beck, Philip</dc:contributor> <dc:creator>Wiebe, Jens</dc:creator> <dcterms:title>Precursors of Majorana modes and their length-dependent energy oscillations probed at both ends of atomic Shiba chains</dcterms:title> <dc:creator>Schneider, Lucas</dc:creator> <dc:contributor>Posske, Thore</dc:contributor> <dc:creator>Neuhaus-Steinmetz, Jannis</dc:creator> </rdf:Description> </rdf:RDF>

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