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@INPROCEEDINGS{Schpers:188603,
author = {Schäpers, Thomas and Weyrich, Christian and Arango,
Yulieth and Schall, Melissa and Heider, Tristan and
Kampmeier, Jörn and Lanius, Martin and Mussler, Gregor and
Grützmacher, Detlev},
title = {{M}agneto-transport measurements on 3-dimensional
topological insulator layers and wirestructures},
reportid = {FZJ-2015-01945},
year = {2015},
abstract = {Three-dimensional topological insulators, such as Bi2Te3
and Sb2Te3, are known to host surface states that are
protected against perturbations by properties of the bulk.
With unique features like spinmomentum locking, suppressed
backscattering and Majorana fermions these systems are very
attractive candidates for future applications in spintronics
as well as quantum informationprocessing. In order to gain
information on the transport properties on molecular beam
epitaxy grown layers of 3-dimensional topological
insulators, the magnetoconductance was measured at
lowtemperatures. The pronounced weak antilocalization effect
found in all our samples confirmed the presence of strong
spin-orbit coupling. However, beside the surface channel a
considerable bulkconductance contribution was present due to
intrinsic doping. Different concepts are discussed, i.e.
ternary layers or pn junctions, to reduce this bulk
conductance contribution. Finally, transportstudies on
lithographically defined wire structures will be presented.},
month = {Mar},
date = {2015-03-25},
organization = {Workshop "Spin coherence and
relaxation phenomena in low-dimensional
systems, Aachen (Germany), 25 Mar 2015
- 27 Mar 2015},
subtyp = {Invited},
cin = {PGI-9},
cid = {I:(DE-Juel1)PGI-9-20110106},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/188603},
}