Topological isoconductance signatures in Majorana nanowires

Abstract We consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends. It is demonstrated that if...

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Autores principales:	L. S. Ricco, J. E. Sanches, Y. Marques, M. de Souza, M. S. Figueira, I. A. Shelykh, A. C. Seridonio
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/22dae46a6378414a87806cc8c115b113
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spelling	oai:doaj.org-article:22dae46a6378414a87806cc8c115b1132021-12-02T19:02:35ZTopological isoconductance signatures in Majorana nanowires10.1038/s41598-021-96415-32045-2322https://doaj.org/article/22dae46a6378414a87806cc8c115b1132021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96415-3https://doaj.org/toc/2045-2322Abstract We consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends. It is demonstrated that if highly nonlocal and nonoverlapping MBSs are formed in the system, the zero-bias Andreev conductance through the dot exhibits characteristic isoconductance profiles with the shape depending on the spin asymmetry of the coupling between the dot and the topological superconductor. Otherwise, for overlapping MBSs with less degree of nonlocality, the conductance is insensitive to the spin polarization and the isoconductance signatures disappear. This allows to propose an alternative experimental protocol for probing the nonlocality of the MBSs in Majorana nanowires.L. S. RiccoJ. E. SanchesY. MarquesM. de SouzaM. S. FigueiraI. A. ShelykhA. C. SeridonioNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q L. S. Ricco J. E. Sanches Y. Marques M. de Souza M. S. Figueira I. A. Shelykh A. C. Seridonio Topological isoconductance signatures in Majorana nanowires
description	Abstract We consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends. It is demonstrated that if highly nonlocal and nonoverlapping MBSs are formed in the system, the zero-bias Andreev conductance through the dot exhibits characteristic isoconductance profiles with the shape depending on the spin asymmetry of the coupling between the dot and the topological superconductor. Otherwise, for overlapping MBSs with less degree of nonlocality, the conductance is insensitive to the spin polarization and the isoconductance signatures disappear. This allows to propose an alternative experimental protocol for probing the nonlocality of the MBSs in Majorana nanowires.
format	article
author	L. S. Ricco J. E. Sanches Y. Marques M. de Souza M. S. Figueira I. A. Shelykh A. C. Seridonio
author_facet	L. S. Ricco J. E. Sanches Y. Marques M. de Souza M. S. Figueira I. A. Shelykh A. C. Seridonio
author_sort	L. S. Ricco
title	Topological isoconductance signatures in Majorana nanowires
title_short	Topological isoconductance signatures in Majorana nanowires
title_full	Topological isoconductance signatures in Majorana nanowires
title_fullStr	Topological isoconductance signatures in Majorana nanowires
title_full_unstemmed	Topological isoconductance signatures in Majorana nanowires
title_sort	topological isoconductance signatures in majorana nanowires
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/22dae46a6378414a87806cc8c115b113
work_keys_str_mv	AT lsricco topologicalisoconductancesignaturesinmajoranananowires AT jesanches topologicalisoconductancesignaturesinmajoranananowires AT ymarques topologicalisoconductancesignaturesinmajoranananowires AT mdesouza topologicalisoconductancesignaturesinmajoranananowires AT msfigueira topologicalisoconductancesignaturesinmajoranananowires AT iashelykh topologicalisoconductancesignaturesinmajoranananowires AT acseridonio topologicalisoconductancesignaturesinmajoranananowires
_version_	1718377196407488512

Topological isoconductance signatures in Majorana nanowires

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