Majorana modes with side features in magnet-superconductor hybrid systems

[2109.06894] Majorana modes with side features in magnet-superconductor hybrid systems Skip to main content Search Submit Donate Log in Condensed Matter > Superconductivity arXiv:2109.06894 (cond-mat) [Submitted on 14 Sep 2021 ( v1 ), last revised 14 Dec 2022 (this version, v2)] Title: Majorana modes with side features in magnet-superconductor hybrid systems Authors: Daniel Crawford , Eric Mascot , Makoto Shimizu , Philip Beck , Jens Wiebe , Roland Wiesendanger , Harald O. Jeschke , Dirk K. Morr , Stephan Rachel View PDF HTML (experimental) Abstract: Magnet-superconductor hybrid (MSH) systems represent promising platforms to host Majorana zero modes (MZMs), the elemental building blocks for fault-tolerant quantum computers. Theoretical description of such MSH structures is mostly based on simplified models, not accounting for the complexity of real materials. Here, based on density functional theory, we derive a superconducting 80-band model to study an MSH system consisting of a magnetic manganese chain on the s wave superconductor niobium. For a wide range of values of the superconducting order parameter, the system is a topological superconductor, with MZMs exhibiting non-universal spatial patterns and a drastic accumulation of spectral weight on both sides along the magnetic chain. These side feature states can be explained by an effective model which is guided by the ab initio results. Performing scanning tunneling spectroscopy experiments on the same system, we observe a spatial structure in the low-energy local density of states that is consistent with the theoretical findings. Our results open a first-principle approach to the discovery of topological superconductors. Comments: 8+9 pages, 4+15 figures; v2 final version, accepted for npj Quantum Materials Subjects: Superconductivity (cond-mat.supr-con) ; Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Cite as: arXiv:2109.06894 [cond-mat.supr-con] (or arXiv:2109.06894v2 [cond-mat.supr-con] for this version) https://doi.org/10.48550/arXiv.2109.06894 Focus to learn more arXiv-issued DOI via DataCite Journal reference: npj Quantum Mat. 7, 117 (2022) Submission history From: Stephan Rachel [ view email ] [v1] Tue, 14 Sep 2021 18:00:11 UTC (7,577 KB) [v2] Wed, 14 Dec 2022 05:56:55 UTC (8,782 KB) Full-text links: Access Paper: View PDF HTML (experimental) TeX Source view license Current browse context: cond-mat.supr-con < prev | next > new | recent | 2021-09 Change to browse by: cond-mat cond-mat.mes-hall References & Citations SciX Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) IArxiv recommender toggle IArxiv Recommender ( What is IArxiv? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab)

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