Electronic Structure and Epitaxy of CdTe Shells on InSb Nanowires

Ghada Badawy, Bomin Zhang, Tomáš Rauch, Jamo Momand, Sebastian Koelling, Jason Jung, Sasa Gazibegovic, Oussama Moutanabbir, Bart J. Kooi, Silvana Botti, Marcel A. Verheijen, Sergey M. Frolov, Erik P.A.M. Bakkers (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

6 Citaten (Scopus)
50 Downloads (Pure)

Samenvatting

Indium antimonide (InSb) nanowires are used as building blocks for quantum devices because of their unique properties, that is, strong spin-orbit interaction and large Landé g-factor. Integrating InSb nanowires with other materials could potentially unfold novel devices with distinctive functionality. A prominent example is the combination of InSb nanowires with superconductors for the emerging topological particles research. Here, the combination of the II–VI cadmium telluride (CdTe) with the III–V InSb in the form of core–shell (InSb–CdTe) nanowires is investigated and potential applications based on the electronic structure of the InSb–CdTe interface and the epitaxy of CdTe on the InSb nanowires are explored. The electronic structure of the InSb–CdTe interface using density functional theory is determined and a type-I band alignment is extracted with a small conduction band offset (⩽0.3 eV). These results indicate the potential application of these shells for surface passivation or as tunnel barriers in combination with superconductors. In terms of structural quality, it is demonstrated that the lattice-matched CdTe can be grown epitaxially on the InSb nanowires without interfacial strain or defects. These shells do not introduce disorder to the InSb nanowires as indicated by the comparable field-effect mobility measured for both uncapped and CdTe-capped nanowires.

Originele taal-2Engels
Artikelnummer2105722
Aantal pagina's8
TijdschriftAdvanced Science
Volume9
Nummer van het tijdschrift12
DOI's
StatusGepubliceerd - 25 apr. 2022

Financiering

This work received support from the Dutch Organization for Scientific Research (NWO), the Foundation for Fundamental Research on Matter (FOM), the European Research Council (ERC HELENA 617256), and Microsoft Corporation Station‐Q. Solliance and the Dutch province of Noord‐Brabant are acknowledged for funding the TEM facility. S.M.F. is supported by the U.S. Department of Energy, Basic Energy Sciences grant DE‐SC0022073 for transport measurements. S.B. and T.R. acknowledge funding from the Volkswagen Stiftung (Momentum) through the project ”dandelion” and from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the project BO 4280/8‐1. The Atom probe tomography work was supported by NSERC Canada (Discovery, SPG, and CRD Grants), Canada Research Chairs, Canada Foundation for Innovation, Mitacs, PRIMA Québec, and Defence Canada (Innovation for Defence Excellence and Security, IDEaS) and was performed at the Northwestern University Center for Atom‐Probe Tomography (NUCAPT). NUCAPT is supported by the MRSEC program (NSF DMR‐1720139), the SHyNE Resource (NSF ECCS‐2025633), and instrumentation grants from the NSF‐MRI (DMR‐0420532) and ONR‐DURIP (N00014‐0400798, N00014‐0610539, N00014‐0910781, N00014‐1712870) programs. This work received support from the Dutch Organization for Scientific Research (NWO), the Foundation for Fundamental Research on Matter (FOM), the European Research Council (ERC HELENA 617256), and Microsoft Corporation Station-Q. Solliance and the Dutch province of Noord-Brabant are acknowledged for funding the TEM facility. S.M.F. is supported by the U.S. Department of Energy, Basic Energy Sciences grant DE-SC0022073 for transport measurements. S.B. and T.R. acknowledge funding from the Volkswagen Stiftung (Momentum) through the project ?dandelion? and from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the project BO 4280/8-1. The Atom probe tomography work was supported by NSERC Canada (Discovery, SPG, and CRD Grants), Canada Research Chairs, Canada Foundation for Innovation, Mitacs, PRIMA Qu?bec, and Defence Canada (Innovation for Defence Excellence and Security, IDEaS) and was performed at the Northwestern University Center for Atom-Probe Tomography (NUCAPT). NUCAPT is supported by the MRSEC program (NSF DMR-1720139), the SHyNE Resource (NSF ECCS-2025633), and instrumentation grants from the NSF-MRI (DMR-0420532) and ONR-DURIP (N00014-0400798, N00014-0610539, N00014-0910781, N00014-1712870)?programs.

FinanciersFinanciernummer
Defence Canada
Microsoft Corporation Station‐Q
Microsoft Corporation Station‐Q
NSF‐MRI
NSF‐MRIDMR‐0420532
ONR‐DURIP
ONR‐DURIPN00014‐1712870, N00014‐0610539, N00014‐0400798, N00014‐0910781
SHyNE ResourceNSF ECCS‐2025633
U.S. Department of Energy
Basic Energy SciencesDE‐SC0022073
Northwestern UniversityNSF DMR‐1720139
Seventh Framework Programme617256
Materials Research Science and Engineering Center, Harvard University
Natural Sciences and Engineering Research Council of Canada
Canada Foundation for Innovation
European Research Council
Deutsche ForschungsgemeinschaftBO 4280/8‐1
Volkswagen Foundation
Foundation for Fundamental Research on Matter
Canada Research Chair
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Mitacs
Institute of Development and Economic Alternatives

    Vingerafdruk

    Duik in de onderzoeksthema's van 'Electronic Structure and Epitaxy of CdTe Shells on InSb Nanowires'. Samen vormen ze een unieke vingerafdruk.

    Citeer dit