%0 Journal Article
%A Heedt, S.
%A Manolescu, A.
%A Nemnes, G. A.
%A Prost, W.
%A Schubert, J.
%A Grützmacher, D.
%A Schäpers, Th.
%T Adiabatic Edge Channel Transport in a Nanowire Quantum Point Contact Register
%J Nano letters
%V 16
%N 7
%@ 1530-6992
%C Washington, DC
%I ACS Publ.
%M FZJ-2016-03922
%P 4569 - 4575
%D 2016
%X We report on a prototype device geometry where a number of quantum point contacts are connected in series in a single quasi-ballistic InAs nanowire. At finite magnetic field the backscattering length is increased up to the micron-scale and the quantum point contacts are connected adiabatically. Hence, several input gates can control the outcome of a ballistic logic operation. The absence of backscattering is explained in terms of selective population of spatially separated edge channels. Evidence is provided by regular Aharonov−Bohm-type conductance oscillations in transverse magnetic fields, in agreement with magnetoconductance calculations. The observation of the Shubnikov−de Haas effect at large magnetic fields corroborates the existence of spatially separated edge channels and provides a new means for nanowire characterization.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000379794200086
%$ pmid:27347816
%R 10.1021/acs.nanolett.6b01840
%U https://juser.fz-juelich.de/record/811450