J
J. Becker
Researcher at Technische Universität München
Publications - 23
Citations - 711
J. Becker is an academic researcher from Technische Universität München. The author has contributed to research in topics: Nanowire & Molecular beam epitaxy. The author has an hindex of 11, co-authored 22 publications receiving 611 citations.
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Journal ArticleDOI
Spontaneous Alloy Composition Ordering in GaAs-AlGaAs Core–Shell Nanowires
Daniel Rudolph,Stefan Funk,Markus Döblinger,Stefanie Morkötter,Simon Hertenberger,Lucas Schweickert,J. Becker,Sonja Matich,Max Bichler,Danĉe Spirkoska,Ilaria Zardo,Jonathan J. Finley,Gerhard Abstreiter,Gregor Koblmüller +13 more
TL;DR: High-resolution metrology techniques and associated chemical analysis reveal rich structure in the AlGaAs alloy composition due to interface segregation, nanofaceting, and local alloy fluctuations within GaAs-Al0.3Ga0.7As core-shell nanowires grown by molecular beam epitaxy on silicon.
Journal ArticleDOI
Stark Effect Spectroscopy of Mono- and Few-Layer MoS2
Julian Klein,Jakob Wierzbowski,A. Regler,J. Becker,F. Heimbach,Kai Müller,Kai Müller,Michael Kaniber,Jonathan J. Finley +8 more
TL;DR: The exciton polarizability is shown to be layer-independent, indicating a strong localization of both electron and hole wave functions in each individual layer.
Journal ArticleDOI
Inorganic Double Helices in Semiconducting SnIP.
Daniela Pfister,Konrad Schäfer,Claudia Ott,Birgit Gerke,Rainer Pöttgen,Oliver Janka,Maximilian Baumgartner,Anastasia Efimova,Andrea Hohmann,Peer Schmidt,Sabarinathan Venkatachalam,Leo van Wüllen,Ulrich Schürmann,Lorenz Kienle,Viola Duppel,Eric Parzinger,Bastian Miller,J. Becker,Alexander W. Holleitner,Richard Weihrich,Tom Nilges +20 more
TL;DR: SnIP is the first atomic-scale double helical semiconductor featuring a 1.86 eV bandgap, high structural and mechanical flexibility, and reasonable thermal stability up to 600 K.
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High Mobility One- and Two-Dimensional Electron Systems in Nanowire-Based Quantum Heterostructures
Stefan Funk,Miguel Royo,Ilaria Zardo,Ilaria Zardo,Daniel Rudolph,Stefanie Morkötter,Benedikt Mayer,J. Becker,A. Bechtold,Sonja Matich,Markus Döblinger,Max Bichler,Gregor Koblmüller,Jonathan J. Finley,Andrea Bertoni,Guido Goldoni,Gerhard Abstreiter +16 more
TL;DR: This work has introduced a novel type of core-shell nanowire heterostructures that incorporate modulation or remote doping and hence may lead to high-mobility electrons in GaAs/Al0.16Ga0.84As core-multishell nanowires grown on silicon.
Journal ArticleDOI
High compositional homogeneity in In-rich InGaAs nanowire arrays on nanoimprinted SiO2/Si (111)
Simon Hertenberger,Stefan Funk,Kristijonas Vizbaras,A. Yadav,D. Rudolph,J. Becker,S. Bolte,Markus Döblinger,Martin Bichler,Giuseppe Scarpa,Paolo Lugli,Ilaria Zardo,Jonathan J. Finley,M.-C. Amann,Gerhard Abstreiter,Gregor Koblmüller +15 more
TL;DR: In this article, the authors reported improved homogeneity control of composition-tuned In1−xGaxAs (x < 0.4) arrays grown by catalyst-free molecular beam epitaxy (MBE) on nanoimprinted SiO2/Si (111) substrates.