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

Science Advances
Howon KimR Wiesendanger

Abstract

Realizing Majorana bound states (MBS) in condensed matter systems is a key challenge on the way toward topological quantum computing. As a promising platform, one-dimensional magnetic 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.

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Citations

Feb 1, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Aksel Kobiałka, Andrzej Ptok
Apr 9, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Hong-Min JiangLing-Zhi Hu
Apr 15, 2020·Nature Communications·Zoltán ScherüblSzabolcs Csonka
Dec 8, 2019·Nature Communications·Jeremy FigginsDirk K Morr
Jul 8, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Grzegorz GórskiTadeusz Domanski
Sep 12, 2019·Scientific Reports·Aksel KobiałkaAndrzej Ptok
Jul 31, 2019·Science Advances·Alexandra Palacio-MoralesRoland Wiesendanger
Sep 26, 2020·Physical Review Letters·Vivien PerrinPascal Simon
Sep 24, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·T ZienkiewiczT Domański
Oct 26, 2018·Scientific Reports·G GórskiT Domański
Jul 1, 2020·Physical Review Letters·S E FreeneyC Morais Smith
Sep 13, 2020·Nature Communications·Howon KimRoland Wiesendanger
Dec 18, 2020·Nature·Shawulienu KezilebiekePeter Liljeroth
Dec 15, 2020·Physical Review Letters·W LiR Wiesendanger
Feb 2, 2021·Science Advances·Lucas SchneiderRoland Wiesendanger
Mar 6, 2021·Physical Review Letters·Dongfei WangRoland Wiesendanger
Apr 3, 2021·Nature Communications·Philip BeckRoland Wiesendanger
Mar 31, 2021·Proceedings of the National Academy of Sciences of the United States of America·Hao DingAli Yazdani
Apr 10, 2021·Physical Review Letters·Masafumi UdagawaTakashi Oka
Apr 25, 2021·Advanced Materials·Michael S LodgeBent Weber
Apr 24, 2021·Advanced Materials·Eva Cortés-Del RíoIván Brihuega
Feb 21, 2019·ACS Nano·Robert H BlickWolfgang J Parak
Nov 20, 2018·Nano Letters·Luigi MalavoltiSebastian Loth
Jul 10, 2019·Journal of the American Chemical Society·Matteo Atzori, Roberta Sessoli
Dec 18, 2019·Nano Letters·Eva LiebhaberKatharina J Franke
Jun 30, 2019·Nano Letters·Shawulienu KezilebiekePeter Liljeroth
Aug 28, 2021·Nanomaterials·András LászlóffyLászló Szunyogh

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Methods Mentioned

BETA
MBS
YSR

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