Spin-Orbit Protection of Induced Superconductivity in Majorana Nanowires

Jouri D.S. Bommer; Hao Zhang; Önder Gül; Bas Nijholt; Michael Wimmer; Filipp N. Rybakov; Julien Garaud; Diana Car; Sébastien R. Plissard; Erik P.A.M. Bakkers; Leo P. Kouwenhoven

doi:10.1103/PhysRevLett.122.187702

Spin-Orbit Protection of Induced Superconductivity in Majorana Nanowires

Jouri D.S. Bommer^*, Hao Zhang, Önder Gül, Bas Nijholt, Michael Wimmer, Filipp N. Rybakov, Julien Garaud, Diana Car, Sébastien R. Plissard, Erik P.A.M. Bakkers, Leo P. Kouwenhoven

^*Corresponding author for this work

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Abstract

Spin-orbit interaction (SOI) plays a key role in creating Majorana zero modes in semiconductor nanowires proximity coupled to a superconductor. We track the evolution of the induced superconducting gap in InSb nanowires coupled to a NbTiN superconductor in a large range of magnetic field strengths and orientations. Based on realistic simulations of our devices, we reveal SOI with a strength of 0.15-0.35 eV Å. Our approach identifies the direction of the spin-orbit field, which is strongly affected by the superconductor geometry and electrostatic gates.

Original language	English
Article number	187702
Journal	Physical Review Letters
Volume	122
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.122.187702
Publication status	Published - 2019

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title = "Spin-Orbit Protection of Induced Superconductivity in Majorana Nanowires",

abstract = "Spin-orbit interaction (SOI) plays a key role in creating Majorana zero modes in semiconductor nanowires proximity coupled to a superconductor. We track the evolution of the induced superconducting gap in InSb nanowires coupled to a NbTiN superconductor in a large range of magnetic field strengths and orientations. Based on realistic simulations of our devices, we reveal SOI with a strength of 0.15-0.35 eV {\AA}. Our approach identifies the direction of the spin-orbit field, which is strongly affected by the superconductor geometry and electrostatic gates.",

author = "Bommer, {Jouri D.S.} and Hao Zhang and {\"O}nder G{\"u}l and Bas Nijholt and Michael Wimmer and Rybakov, {Filipp N.} and Julien Garaud and Diana Car and Plissard, {S{\'e}bastien R.} and Bakkers, {Erik P.A.M.} and Kouwenhoven, {Leo P.}",

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AU - Bommer, Jouri D.S.

AU - Zhang, Hao

AU - Gül, Önder

AU - Nijholt, Bas

AU - Wimmer, Michael

AU - Rybakov, Filipp N.

AU - Garaud, Julien

AU - Car, Diana

AU - Plissard, Sébastien R.

AU - Bakkers, Erik P.A.M.

AU - Kouwenhoven, Leo P.

PY - 2019

Y1 - 2019

N2 - Spin-orbit interaction (SOI) plays a key role in creating Majorana zero modes in semiconductor nanowires proximity coupled to a superconductor. We track the evolution of the induced superconducting gap in InSb nanowires coupled to a NbTiN superconductor in a large range of magnetic field strengths and orientations. Based on realistic simulations of our devices, we reveal SOI with a strength of 0.15-0.35 eV Å. Our approach identifies the direction of the spin-orbit field, which is strongly affected by the superconductor geometry and electrostatic gates.

AB - Spin-orbit interaction (SOI) plays a key role in creating Majorana zero modes in semiconductor nanowires proximity coupled to a superconductor. We track the evolution of the induced superconducting gap in InSb nanowires coupled to a NbTiN superconductor in a large range of magnetic field strengths and orientations. Based on realistic simulations of our devices, we reveal SOI with a strength of 0.15-0.35 eV Å. Our approach identifies the direction of the spin-orbit field, which is strongly affected by the superconductor geometry and electrostatic gates.

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DO - 10.1103/PhysRevLett.122.187702

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VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

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ER -

Spin-Orbit Protection of Induced Superconductivity in Majorana Nanowires

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