%0 Journal Article
%A Gül, Ö.
%A Günel, H. Y.
%A Lüth, H.
%A Rieger, T.
%A Wenz, T.
%A Haas, F.
%A Lepsa, M.
%A Panaitov, G.
%A Grützmacher, D.
%A Schäpers, Th.
%T Giant Magnetoconductance Oscillations in Hybrid Superconductor−Semiconductor Core/Shell Nanowire Devices
%J Nano letters
%V 14
%N 11
%@ 1530-6992
%C Washington, DC
%I ACS Publ.
%M FZJ-2016-04085
%P 6269 - 6274
%D 2014
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000345723800038
%R 10.1021/nl502598s
%U https://juser.fz-juelich.de/record/811701