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Epitaxial Pb on InA...
Epitaxial Pb on InAs nanowires for quantum devices
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- Kanne, Thomas (author)
- Köpenhamns universitet,University of Copenhagen
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- Marnauza, Mikelis (author)
- Köpenhamns universitet,University of Copenhagen
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- Olsteins, Dags (author)
- Köpenhamns universitet,University of Copenhagen
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- Carrad, Damon J. (author)
- Köpenhamns universitet,University of Copenhagen
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- Sestoft, Joachim E. (author)
- Köpenhamns universitet,University of Copenhagen
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- de Bruijckere, Joeri (author)
- Köpenhamns universitet,University of Copenhagen,Technische Universiteit Delft,Delft University of Technology (TU Delft)
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- Zeng, Lunjie, 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johnson, Erik (author)
- Köpenhamns universitet,University of Copenhagen
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- Olsson, Eva, 1960 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Grove-Rasmussen, Kasper (author)
- Köpenhamns universitet,University of Copenhagen
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- Nygard, Jesper (author)
- Köpenhamns universitet,University of Copenhagen
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(creator_code:org_t)
- 2021-05-10
- 2021
- English.
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In: Nature Nanotechnology. - : Springer Science and Business Media LLC. - 1748-3387 .- 1748-3395. ; 16:7, s. 776-781
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http://arxiv.org/pdf...
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Abstract
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- Semiconductor-superconductor hybrids are used for realizing complex quantum phenomena but are limited in the accessible magnetic field and temperature range. Now, hybrid devices made from InAs nanowires and epitaxially matched, single-crystal, atomically flat Pb films present superior characteristics, doubling the available parameter space. Semiconductor-superconductor hybrids are widely used to realize complex quantum phenomena, such as topological superconductivity and spins coupled to Cooper pairs. Accessing new, exotic regimes at high magnetic fields and increasing operating temperatures beyond the state-of-the-art requires new, epitaxially matched semiconductor-superconductor materials. One challenge is the generation of favourable conditions for heterostructural formation between materials with the desired properties. Here we harness an increased knowledge of metal-on-semiconductor growth to develop InAs nanowires with epitaxially matched, single-crystal, atomically flat Pb films with no axial grain boundaries. These highly ordered heterostructures have a critical temperature of 7 K and a superconducting gap of 1.25 meV, which remains hard at 8.5 T, and therefore they offer a parameter space more than twice as large as those of alternative semiconductor-superconductor hybrids. Additionally, InAs/Pb island devices exhibit magnetic field-driven transitions from a Cooper pair to single-electron charging, a prerequisite for use in topological quantum computation. Semiconductor-Pb hybrids potentially enable access to entirely new regimes for a number of different quantum systems.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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- art (subject category)
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- By the author/editor
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Kanne, Thomas
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Marnauza, Mikeli ...
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Olsteins, Dags
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Carrad, Damon J.
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Sestoft, Joachim ...
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de Bruijckere, J ...
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show more...
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Zeng, Lunjie, 19 ...
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Johnson, Erik
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Olsson, Eva, 196 ...
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Grove-Rasmussen, ...
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Nygard, Jesper
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Nature Nanotechn ...
- By the university
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Chalmers University of Technology