TY  - JOUR
AU  - Gül, Ö.
AU  - Günel, H. Y.
AU  - Lüth, H.
AU  - Rieger, T.
AU  - Wenz, T.
AU  - Haas, F.
AU  - Lepsa, M.
AU  - Panaitov, G.
AU  - Grützmacher, D.
AU  - Schäpers, Th.
TI  - Giant Magnetoconductance Oscillations in Hybrid Superconductor−Semiconductor Core/Shell Nanowire Devices
JO  - Nano letters
VL  - 14
IS  - 11
SN  - 1530-6992
CY  - Washington, DC
PB  - ACS Publ.
M1  - FZJ-2016-04085
SP  - 6269 - 6274
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000345723800038
DO  - DOI:10.1021/nl502598s
UR  - https://juser.fz-juelich.de/record/811701
ER  -