M
Markus R. Wagner
Researcher at Technical University of Berlin
Publications - 119
Citations - 3263
Markus R. Wagner is an academic researcher from Technical University of Berlin. The author has contributed to research in topics: Raman spectroscopy & Photoluminescence. The author has an hindex of 33, co-authored 110 publications receiving 2799 citations. Previous affiliations of Markus R. Wagner include Catalan Institute of Nanotechnology & University of Konstanz.
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Journal ArticleDOI
Nanophononics: state of the art and perspectives
Sebastian Volz,Jose Ordonez-Miranda,Andrey Shchepetov,Mika Prunnila,Jouni Ahopelto,Thomas Pezeril,Gwenaelle Vaudel,Vitaly Gusev,Pascal Ruello,Eva M. Weig,Martin Schubert,Mike Hettich,Martin Grossman,Thomas Dekorsy,Francesc Alzina,Bartlomiej Graczykowski,Emigdio Chavez-Angel,J. Sebastian Reparaz,Markus R. Wagner,Clivia M. Sotomayor-Torres,Shiyun Xiong,Sanghamitra Neogi,Sanghamitra Neogi,Davide Donadio +23 more
TL;DR: In this article, the authors assess the state of the art of nanophononics, describing the recent achievements and the open challenges in nanoscale heat transport, coherent phonon generation and exploitation, and in nano- and optomechanics.
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Bound excitons in ZnO: Structural defect complexes versus shallow impurity centers
Markus R. Wagner,Gordon Callsen,Juan Sebastián Reparaz,Jan-Hindrik Schulze,Ronny Kirste,Munise Cobet,Irina A. Ostapenko,Sven Rodt,Christian Nenstiel,Martin Kaiser,Axel Hoffmann,Anna V. Rodina,Matthew R. Phillips,S. Lautenschläger,Sebastian Eisermann,Bruno K. Meyer +15 more
TL;DR: In this article, the authors present a comprehensive study of the properties of the deeply bound excitons with particular focus on the ${Y}_{0}$ transition at 3.33 and 3.35 eV.
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Reduction of the thermal conductivity in free-standing silicon nano-membranes investigated by non-invasive Raman thermometry
Emigdio Chavez-Angel,Juan Sebastián Reparaz,Jordi Gomis-Bresco,Markus R. Wagner,J. Cuffe,Bartlomiej Graczykowski,Andrey Shchepetov,Hua Jiang,Mika Prunnila,Jouni Ahopelto,Francesc Alzina,C. M. Sotomayor Torres +11 more
TL;DR: In this paper, the reduction of the thermal conductivity in ultra-thin suspended Si membranes with high crystalline quality was investigated using Raman thermometry, a novel contactless technique for temperature determination.
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Ionized and neutral donor-bound excitons in ZnO
TL;DR: In this paper, the experimental data on the localization energies of ionized and neutral donor bound excitons are compared to theoretical predictions and a good agreement is found for ZnO.
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Two-Dimensional Phononic Crystals: Disorder Matters
Markus R. Wagner,Bartlomiej Graczykowski,Juan Sebastián Reparaz,Alexandros El Sachat,Marianna Sledzinska,Francesc Alzina,Clivia M. Sotomayor Torres +6 more
TL;DR: The increase of surface roughness and the introduction of short-range disorder are shown to modify the phonon dispersion and phonon coherence in the hypersonic (GHz) range without affecting the room-temperature thermal conductivity.