J
Julian Klein
Researcher at Massachusetts Institute of Technology
Publications - 42
Citations - 1507
Julian Klein is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Exciton & van der Waals force. The author has an hindex of 14, co-authored 29 publications receiving 955 citations. Previous affiliations of Julian Klein include Technische Universität München & Nanosystems Initiative Munich.
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Journal ArticleDOI
Long-Lived Direct and Indirect Interlayer Excitons in van der Waals Heterostructures
Bastian Miller,Bastian Miller,Alexander Steinhoff,Borja Pano,Julian Klein,Julian Klein,Frank Jahnke,Alexander W. Holleitner,Alexander W. Holleitner,Ursula Wurstbauer,Ursula Wurstbauer +10 more
TL;DR: The observation of a doublet structure in the low-temperature photoluminescence of interlayer excitons in heterostructure consisting of monolayer MoSe2 and WSe2 provides fundamental insights into long-lived interlayer states in van der Waals heterostructures with possible bosonic many-body interactions.
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Direct exciton emission from atomically thin transition metal dichalcogenide heterostructures near the lifetime limit
Jakob Wierzbowski,Jakob Wierzbowski,Julian Klein,Julian Klein,Florian Sigger,Christian Straubinger,Malte Kremser,Takashi Taniguchi,Kenji Watanabe,Ursula Wurstbauer,Ursula Wurstbauer,Alexander W. Holleitner,Alexander W. Holleitner,Michael Kaniber,Michael Kaniber,Kai Müller,Jonathan J. Finley,Jonathan J. Finley +17 more
TL;DR: In this article, the authors demonstrate the reduction of the inhomogeneous linewidth of the free excitons in atomically thin transition metal dichalcogenides (TMDCs) MoSe2, WSe2 and MoS2 by encapsulation within few nanometre thick hBN.
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Site-selectively generated photon emitters in monolayer MoS2 via local helium ion irradiation
Julian Klein,Michael Lorke,Matthias Florian,Florian Sigger,Florian Sigger,Lukas Sigl,Sergio Rey,Jakob Wierzbowski,J. Cerne,Kai Müller,Elmar Mitterreiter,Philipp Zimmermann,T. Taniguchi,Kenji Watanabe,Ursula Wurstbauer,Ursula Wurstbauer,Michael Kaniber,Michael Kaniber,Michael Knap,Richard Schmidt,Jonathan J. Finley,Jonathan J. Finley,Alexander W. Holleitner,Alexander W. Holleitner +23 more
TL;DR: In this article, the authors used a sub-nm focused helium ion beam to deterministically write optically active defect states in a single transition metal dichalcogenide layer and obtain spectrally narrow emission lines that produce photons in the visible spectral range.
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The Dielectric Impact of Layer Distances on Exciton and Trion Binding Energies in van der Waals Heterostructures.
Matthias Florian,Malte Hartmann,Alexander Steinhoff,Julian Klein,Alexander W. Holleitner,Alexander W. Holleitner,Jonathan J. Finley,Jonathan J. Finley,Tim O. Wehling,Michael Kaniber,Michael Kaniber,Christopher Gies +11 more
TL;DR: In this article, an electrostatic model for a dielectric heteromultilayered environment with semiconductor many-particle methods was proposed to demonstrate that the electronic and optical properties are sensitive to the interlayer distances on the atomic scale.
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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.