%0 Conference Paper
%A Schäpers, Thomas
%A Haas, Fabian
%A Zellekens, Patrick
%A Rieger, Torsten
%A Wenz, Tobias
%A Günel
%A Gül
%A Demarina, Nataliya
%A Lepsa, Mihail Ion
%A Lüth, Hans
%A Grützmacher, Detlev
%T Quantum Transport in Core/Shell Semiconductor Nanowires
%M FZJ-2015-01943
%D 2015
%X The transport properties of GaAs/InAs core/shell nanowires is investigated, where the highly conductive InAs shell is wrapped around an insulating GaAs core nanowire. At low temperatures pronounced flxperiodic (h/e) magnetoconductance oscillations are observed, when the magnetic fild is oriented along the nanowire axis. These very regular oscillations are explained by the formation of closed-loop quantumstates in the tube-like InAs shell comprising a flx periodic energy spectrum. The magnetoconductance oscillations are even observed at temperatures as high as 50K. When the GaAs/InAs core/shell nanowire is contacted by two superconducting Nb electrodes the carrier transport is governed by phase-coherent Andreev reflction processes. Here, the observed oscillation period in the magneto-transport corresponds to half a flx quantum (h/2e).
%B DPG Frühjahrstagung
%C 16 Mar 2015 - 20 Mar 2015, Berlin (Germany)
Y2 16 Mar 2015 - 20 Mar 2015
M2 Berlin, Germany
%F PUB:(DE-HGF)6
%9 Conference Presentation
%U https://juser.fz-juelich.de/record/188601