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@ARTICLE{Moors:850759,
author = {Moors, Kristof and Schüffelgen, Peter and Rosenbach,
Daniel and Schmitt, Tobias and Schäpers, Thomas and
Schmidt, Thomas L.},
title = {{M}agnetotransport signatures of three-dimensional
topological insulator nanostructures},
journal = {Physical review / B},
volume = {97},
number = {24},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2018-04537},
pages = {245429},
year = {2018},
abstract = {We study the magnetotransport properties of patterned 3D
topological insulator nanostructures with several leads,
such as kinks or Y-junctions, near the Dirac point with
analytical as well as numerical techniques. The interplay of
the nanostructure geometry, the external magnetic field, and
the spin-momentum locking of the topological surface states
lead to a richer magnetoconductance phenomenology as
compared to straight nanowires. Similar to straight wires, a
quantized conductance with perfect transmission across the
nanostructure can be realized across a kink when the input
and output channels are pierced by a half-integer magnetic
flux quantum. Unlike for straight wires, there is an
additional requirement depending on the orientation of the
external magnetic field. A right-angle kink shows a unique
π-periodic magnetoconductance signature as a function of
the in-plane angle of the magnetic field. For a Y-junction,
the transmission can be perfectly steered to either of the
two possible output legs by a proper alignment of the
external magnetic field. These magnetotransport signatures
offer new ways to explore topological surface states and
could be relevant for quantum transport experiments on
nanostructures which can be realized with existing
fabrication methods.},
cin = {PGI-9 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
pnm = {522 - Controlling Spin-Based Phenomena (POF3-522)},
pid = {G:(DE-HGF)POF3-522},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000436907800012},
doi = {10.1103/PhysRevB.97.245429},
url = {https://juser.fz-juelich.de/record/850759},
}