Journal Article

FZJ-2016-04085

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Giant Magnetoconductance Oscillations in Hybrid Superconductor−Semiconductor Core/Shell Nanowire Devices

Gül, Ö. ; Günel, H. Y.FZJ* ; Lüth, H.FZJ* ; Rieger, T.FZJ* ; Wenz, T.FZJ* ; Haas, F.FZJ* ; Lepsa, M.FZJ* ; Panaitov, G.FZJ* ; Grützmacher, D.FZJ* ; Schäpers, T. (Corresponding author)FZJ*

2014
ACS Publ. Washington, DC

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Please use a persistent id in citations: doi:10.1021/nl502598s

Abstract: The magnetotransport of GaAs/InAs core/shell nanowires contacted by two superconducting Nb electrodes is investigated, where the InAs shell forms a tube-like conductive channel around the highly resistive GaAs core. By applying a magnetic field along the nanowire axis, regular magnetoconductance oscillations with an amplitude in the order of e2/h are observed. The oscillation amplitude is found to be larger by 2 orders of magnitude compared to the measurements of a reference sample with normal metal contacts. For the Nb-contacted core/shell nanowire the oscillation period corresponds to half a flux quantum Φ0/2 = h/2e in contrast to the period of Φ0 of the reference sample. The strongly enhanced magnetoconductance oscillations are explained by phase-coherent resonant Andreev reflections at the Nb-core/shell nanowire interface.

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. Bioelektronik (PGI-8)
3. JARA-FIT (JARA-FIT)

Research Program(s):

1. 522 - Controlling Spin-Based Phenomena (POF3-522) (POF3-522)

Appears in the scientific report 2016

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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