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@ARTICLE{Zellekens:874659,
author = {Zellekens, Patrick and Demarina, Nataliya and Janssen,
Johanna and Rieger, Torsten and Lepsa, Mihail Ion and Perla,
Pujitha and Panaitov, G. and Lüth, Hans and Grützmacher,
Detlev and Schäpers, Thomas},
title = {{P}hase coherent transport and spin-orbit interaction in
{G}a{A}s/{I}n{S}b core/shell nanowires},
journal = {Semiconductor science and technology},
volume = {35},
number = {8},
issn = {0268-1242},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2020-01575},
pages = {13},
year = {2020},
abstract = {Low-temperature magnetotransport measurements are performed
on GaAs/InSb core-shell nanowires. The nanowires were
self-catalyzed grown by molecular beam epitaxy. The
conductance measurements as a function of back-gate voltage
show an ambipolar behavior comprising an insulating range in
between the transition from the p-type to the n-type region.
Simulations based on a self-consistent Schrödinger--Poisson
solver revealed that the ambipolar characteristics originate
from a Fermi level dependent occupation of hole and electron
states within the approximately circular quantum well formed
in the InSb shell. By applying a perpendicular magnetic
field with respect to the nanowire axis, conductance
fluctuations were observed, which are used to extract the
phase-coherence length. By averaging the magneto-conductance
traces at different back-gate voltages, weak
antilocalization features are resolved. Regular
flux-periodic conductance oscillations are measured when an
axial magnetic field is applied. These oscillations are
attributed to closed-loop quantized states located in the
InSb shell which shift their energetic position periodically
with the magnetic flux. Possible reasons for experimentally
observed variations in the oscillation patterns are
discussed using simulation results.},
cin = {PGI-9 / PGI-2 / PGI-10 / IBI-3 / JARA-FIT},
ddc = {620},
cid = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)PGI-2-20110106 /
I:(DE-Juel1)PGI-10-20170113 / I:(DE-Juel1)IBI-3-20200312 /
$I:(DE-82)080009_20140620$},
pnm = {522 - Controlling Spin-Based Phenomena (POF3-522)},
pid = {G:(DE-HGF)POF3-522},
typ = {PUB:(DE-HGF)16},
doi = {10.1088/1361-6641/ab8396},
url = {https://juser.fz-juelich.de/record/874659},
}