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@ARTICLE{Weis:151565,
author = {Weis, Karl and Wirths, Stephan and Winden, Andreas and
Sladek, Kamil and Hardtdegen, Hilde and Lüth, Hans and
Grützmacher, Detlev and Schäpers, Thomas},
title = {{Q}uantum dots in {I}n{A}s nanowires induced by surface
potential fluctuations},
journal = {Nanotechnology},
volume = {25},
number = {13},
issn = {1361-6528},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2014-01458},
pages = {135203},
year = {2014},
abstract = {Back-gated InAs nanowire field-effect transistors are
studied focusing on the formation of intrinsic quantum dots,
i.e. dots not intentionally defined by electrodes. Such dots
have been studied before, but the suggested explanations for
their origin leave some open questions, which are addressed
here. Stability diagrams of samples with different doping
levels are recorded at electron temperatures below 200 mK,
allowing us to estimate the number and size of the dots as
well as the type of connection, i.e. in series or in
parallel. We discuss several potential physical origins of
the dots and conclude that they are most probably induced by
potential fluctuations at the nanowire surface.
Additionally, we show that via gate voltage and doping, the
samples can be tuned to different regimes of Coulomb
blockade.},
cin = {PGI-9 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
pnm = {421 - Frontiers of charge based Electronics (POF2-421)},
pid = {G:(DE-HGF)POF2-421},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000332858700004},
doi = {10.1088/0957-4484/25/13/135203},
url = {https://juser.fz-juelich.de/record/151565},
}