L
Ludger Wirtz
Researcher at University of Luxembourg
Publications - 146
Citations - 12033
Ludger Wirtz is an academic researcher from University of Luxembourg. The author has contributed to research in topics: Graphene & Raman spectroscopy. The author has an hindex of 46, co-authored 139 publications receiving 10649 citations. Previous affiliations of Ludger Wirtz include Solid State Physics Laboratory & Vienna University of Technology.
Papers
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Journal ArticleDOI
Spatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene
D. Graf,F. Molitor,Klaus Ensslin,Christoph Stampfer,A. Jungen,Christofer Hierold,Ludger Wirtz +6 more
TL;DR: In this article, the authors used a scanning confocal approach to collect spectral data with spatial resolution, which allows them to directly compare Raman images with scanning force micrographs.
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Phonons in single-layer and few-layer MoS 2 and WS 2
TL;DR: In this paper, the phonon dispersion relations of the single-layer and bulk dichalcogenides MoS2 and WS2 were investigated and the behavior of the Raman-active modes A1g and E 1 2g as a function of the number of layers was explored.
Phonons in single-layer and few-layer MoS2
TL;DR: In this paper, the phonon dispersion relations of the single-layer and bulk dichalcogenides MoS2 and WS2 were investigated and the behavior of the Raman-active modes A1g and E 1 2g as a function of the number of layers was explored.
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Effect of spin-orbit interaction on the optical spectra of single-layer, double-layer, and bulk MoS 2
Alejandro Molina-Sanchez,Alejandro Molina-Sanchez,Davide Sangalli,Kerstin Hummer,Andrea Marini,Ludger Wirtz,Ludger Wirtz +6 more
TL;DR: In this article, a converged ab initio calculation of the optical absorption spectra of single-layer, double-layer and bulk MoS was presented, where the authors explicitly include spin-orbit coupling, using the full spinorial Kohn-Sham wave functions as input.
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Excitons in Boron Nitride Nanotubes: Dimensionality Effects
TL;DR: It is shown that the optical absorption spectra of boron nitride (BN) nanotubes are dominated by strongly bound excitons, and this provides an explanation for the observed "optical gap" constancy for different tubes and bulk hexagonal BN.