Toward tailoring Majorana bound states in artificially constructed magnetic atom chains on elemental superconductors

Howon Kim, Alexandra Palacio-Morales, Thore Posske, Levente Rózsa, K. Palotás, L. Szunyogh, Michael Thorwart, Roland Wiesendanger

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Realizing Majorana bound states (MBS) in condensed matter systems is a key challenge on the way toward topological quantumcomputing. As a promising platform, one-dimensionalmagnetic chains on conventional superconductors were theoretically predicted to host MBS at the chain ends.We demonstrate a novel approach to design of model-type atomic-scale systems for studying MBS using single-atom manipulation techniques. Our artificially constructed atomic Fe chains on a Re surface exhibit spin spiral states and a remarkable enhancement of the local density of states at zero energy being strongly localized at the chain ends. Moreover, the zero-energy modes at the chain ends are shown to emerge and become stabilized with increasing chain length. Tight-binding model calculations based on parameters obtained from ab initio calculations corroborate that the system resides in the topological phase. Our work opens new pathways to design MBS in atomic-scale hybrid structures as a basis for fault-tolerant topological quantum computing.

Original languageEnglish
Article numbereaar5251
JournalScience advances
Volume4
Issue number5
DOIs
Publication statusPublished - May 11 2018

Fingerprint

atoms
hybrid structures
quantum computation
manipulators
platforms
energy
augmentation

ASJC Scopus subject areas

  • General

Cite this

Toward tailoring Majorana bound states in artificially constructed magnetic atom chains on elemental superconductors. / Kim, Howon; Palacio-Morales, Alexandra; Posske, Thore; Rózsa, Levente; Palotás, K.; Szunyogh, L.; Thorwart, Michael; Wiesendanger, Roland.

In: Science advances, Vol. 4, No. 5, eaar5251, 11.05.2018.

Research output: Contribution to journalArticle

Kim, Howon ; Palacio-Morales, Alexandra ; Posske, Thore ; Rózsa, Levente ; Palotás, K. ; Szunyogh, L. ; Thorwart, Michael ; Wiesendanger, Roland. / Toward tailoring Majorana bound states in artificially constructed magnetic atom chains on elemental superconductors. In: Science advances. 2018 ; Vol. 4, No. 5.
@article{417f44509c2f4bc3914ab60577362924,
title = "Toward tailoring Majorana bound states in artificially constructed magnetic atom chains on elemental superconductors",
abstract = "Realizing Majorana bound states (MBS) in condensed matter systems is a key challenge on the way toward topological quantumcomputing. As a promising platform, one-dimensionalmagnetic chains on conventional superconductors were theoretically predicted to host MBS at the chain ends.We demonstrate a novel approach to design of model-type atomic-scale systems for studying MBS using single-atom manipulation techniques. Our artificially constructed atomic Fe chains on a Re surface exhibit spin spiral states and a remarkable enhancement of the local density of states at zero energy being strongly localized at the chain ends. Moreover, the zero-energy modes at the chain ends are shown to emerge and become stabilized with increasing chain length. Tight-binding model calculations based on parameters obtained from ab initio calculations corroborate that the system resides in the topological phase. Our work opens new pathways to design MBS in atomic-scale hybrid structures as a basis for fault-tolerant topological quantum computing.",
author = "Howon Kim and Alexandra Palacio-Morales and Thore Posske and Levente R{\'o}zsa and K. Palot{\'a}s and L. Szunyogh and Michael Thorwart and Roland Wiesendanger",
year = "2018",
month = "5",
day = "11",
doi = "10.1126/sciadv.aar5251",
language = "English",
volume = "4",
journal = "Science advances",
issn = "2375-2548",
publisher = "American Association for the Advancement of Science",
number = "5",

}

TY - JOUR

T1 - Toward tailoring Majorana bound states in artificially constructed magnetic atom chains on elemental superconductors

AU - Kim, Howon

AU - Palacio-Morales, Alexandra

AU - Posske, Thore

AU - Rózsa, Levente

AU - Palotás, K.

AU - Szunyogh, L.

AU - Thorwart, Michael

AU - Wiesendanger, Roland

PY - 2018/5/11

Y1 - 2018/5/11

N2 - Realizing Majorana bound states (MBS) in condensed matter systems is a key challenge on the way toward topological quantumcomputing. As a promising platform, one-dimensionalmagnetic chains on conventional superconductors were theoretically predicted to host MBS at the chain ends.We demonstrate a novel approach to design of model-type atomic-scale systems for studying MBS using single-atom manipulation techniques. Our artificially constructed atomic Fe chains on a Re surface exhibit spin spiral states and a remarkable enhancement of the local density of states at zero energy being strongly localized at the chain ends. Moreover, the zero-energy modes at the chain ends are shown to emerge and become stabilized with increasing chain length. Tight-binding model calculations based on parameters obtained from ab initio calculations corroborate that the system resides in the topological phase. Our work opens new pathways to design MBS in atomic-scale hybrid structures as a basis for fault-tolerant topological quantum computing.

AB - Realizing Majorana bound states (MBS) in condensed matter systems is a key challenge on the way toward topological quantumcomputing. As a promising platform, one-dimensionalmagnetic chains on conventional superconductors were theoretically predicted to host MBS at the chain ends.We demonstrate a novel approach to design of model-type atomic-scale systems for studying MBS using single-atom manipulation techniques. Our artificially constructed atomic Fe chains on a Re surface exhibit spin spiral states and a remarkable enhancement of the local density of states at zero energy being strongly localized at the chain ends. Moreover, the zero-energy modes at the chain ends are shown to emerge and become stabilized with increasing chain length. Tight-binding model calculations based on parameters obtained from ab initio calculations corroborate that the system resides in the topological phase. Our work opens new pathways to design MBS in atomic-scale hybrid structures as a basis for fault-tolerant topological quantum computing.

UR - http://www.scopus.com/inward/record.url?scp=85047141666&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85047141666&partnerID=8YFLogxK

U2 - 10.1126/sciadv.aar5251

DO - 10.1126/sciadv.aar5251

M3 - Article

AN - SCOPUS:85047141666

VL - 4

JO - Science advances

JF - Science advances

SN - 2375-2548

IS - 5

M1 - eaar5251

ER -