Nature Physics, volume 17, issue 8, pages 943-948

Topological Shiba bands in artificial spin chains on superconductors

Lucas Schneider ¹

PHILIP R. BECK ¹

Thore Posske ^{2, 3}

Daniel Crawford ⁴

Eric Mascot ⁵

Stephan Rachel ⁴

R. Wiesendanger ¹

Jens Wiebe ¹

Hide authors affiliations Show authors affiliations: 5 affiliations

Department of Physics, Universität Hamburg, Hamburg, Germany |

I. Institute for Theoretical Physics, Universität Hamburg, Hamburg, Germany |

Centre for Ultrafast Imaging, Hamburg, Germany |

⁴

School of Physics, University of Melbourne, Parkville, Australia |

⁵

Department of Physics, University of Illinois at Chicago, Chicago, USA |

Publication type: Journal Article

Publication date: 2021-05-13

Springer Nature

Journal: Nature Physics

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Quartile WOS

Impact factor: 19.6

ISSN: 17452473, 17452481

DOI: 10.1038/s41567-021-01234-y

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General Physics and Astronomy

Abstract

A major challenge in developing topological superconductors for implementing topological quantum computing is their characterization and control. It has been proposed that a p-wave-gapped topological superconductor can be fabricated with single-atom precision by assembling chains of magnetic atoms on s-wave superconductors with spin–orbit coupling. Here we analyse Bogoliubov quasiparticle interference in Mn chains, constructed atom by atom on Nb(110), and reveal the formation of multi-orbital Shiba bands using momentum-resolved measurements. We find evidence that one band features a topologically non-trivial p-wave gap, as inferred from its shape and particle–hole asymmetric intensity. Our work is an important step towards a distinct experimental determination of topological phases in multi-orbital systems by bulk electron band structure properties only. Chains of magnetic atoms on the surface of a superconductor are shown to have topologically non-trivial bands that could host Majorana bound states.

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American Physical Society (APS)	American Physical Society (APS), 40, 51.95% American Physical Society (APS) 40 publications, 51.95%
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American Association for the Advancement of Science (AAAS)	American Association for the Advancement of Science (AAAS), 1, 1.3% American Association for the Advancement of Science (AAAS) 1 publication, 1.3%
Stichting SciPost	Stichting SciPost, 1, 1.3% Stichting SciPost 1 publication, 1.3%
Chinese Physical Society	Chinese Physical Society, 1, 1.3% Chinese Physical Society 1 publication, 1.3%
Wiley	Wiley, 1, 1.3% Wiley 1 publication, 1.3%
Treatise	Treatise, 1, 1.3% Treatise 1 publication, 1.3%
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Schneider L. et al. Topological Shiba bands in artificial spin chains on superconductors // Nature Physics. 2021. Vol. 17. No. 8. pp. 943-948.

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Schneider L., BECK P. R., Posske T., Crawford D., Mascot E., Rachel S., Wiesendanger R., Wiebe J. Topological Shiba bands in artificial spin chains on superconductors // Nature Physics. 2021. Vol. 17. No. 8. pp. 943-948.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1038/s41567-021-01234-y

UR - https://doi.org/10.1038/s41567-021-01234-y

TI - Topological Shiba bands in artificial spin chains on superconductors

T2 - Nature Physics

AU - Schneider, Lucas

AU - BECK, PHILIP R.

AU - Posske, Thore

AU - Crawford, Daniel

AU - Mascot, Eric

AU - Rachel, Stephan

AU - Wiesendanger, R.

AU - Wiebe, Jens

PY - 2021

DA - 2021/05/13

PB - Springer Nature

SP - 943-948

IS - 8

VL - 17

SN - 1745-2473

SN - 1745-2481

ER -

BibTex |

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BibTex Copy

@article{2021_Schneider,

author = {Lucas Schneider and PHILIP R. BECK and Thore Posske and Daniel Crawford and Eric Mascot and Stephan Rachel and R. Wiesendanger and Jens Wiebe},

title = {Topological Shiba bands in artificial spin chains on superconductors},

journal = {Nature Physics},

year = {2021},

volume = {17},

publisher = {Springer Nature},

month = {may},

url = {https://doi.org/10.1038/s41567-021-01234-y},

number = {8},

pages = {943--948},

doi = {10.1038/s41567-021-01234-y}

}

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Schneider, Lucas, et al. “Topological Shiba bands in artificial spin chains on superconductors.” Nature Physics, vol. 17, no. 8, May. 2021, pp. 943-948. https://doi.org/10.1038/s41567-021-01234-y.

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Publisher

Springer Nature

Journal

Nature Physics

Quartile SCImago

Quartile WOS

Impact factor

19.6

ISSN

17452473 (Print)
17452481 (Electronic)