D
Detlev Grützmacher
Researcher at Forschungszentrum Jülich
Publications - 447
Citations - 9497
Detlev Grützmacher is an academic researcher from Forschungszentrum Jülich. The author has contributed to research in topics: Quantum well & Molecular beam epitaxy. The author has an hindex of 45, co-authored 425 publications receiving 8443 citations. Previous affiliations of Detlev Grützmacher include Johannes Kepler University of Linz & Paul Scherrer Institute.
Papers
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Journal ArticleDOI
Lasing in direct-bandgap GeSn alloy grown on Si
Stephan Wirths,R. Geiger,R. Geiger,N. von den Driesch,Gregor Mussler,Toma Stoica,Siegfried Mantl,Zoran Ikonic,Martina Luysberg,Stefano Chiussi,J. M. Hartmann,Hans Sigg,Jérôme Faist,Dan Buca,Detlev Grützmacher +14 more
TL;DR: In this paper, a direct bandgap GeSn alloy, grown directly onto Si(001), was used for experimentally demonstrating lasing threshold and linewidth narrowing at low temperatures.
Journal ArticleDOI
Intersubband electroluminescence from silicon-based quantum cascade structures.
G. Dehlinger,Laurent Diehl,Ulf Gennser,Hans Sigg,Jérôme Faist,Klaus Ensslin,Detlev Grützmacher,Elisabeth Müller +7 more
TL;DR: The observation of intersubband electroluminescence from a p-type silicon/silicon-germanium quantum cascade structure is reported, and the nonradiative lifetime is found to depend strongly on the design of the quantum well structure, and is shown to reach values comparable to that of an equivalent GaInAs/AlInAs laser structure.
Journal ArticleDOI
Optically Pumped GeSn Microdisk Lasers on Si
Daniela Stange,Stephan Wirths,R. Geiger,C. Schulte-Braucks,Bahareh Marzban,Nils von den Driesch,Gregor Mussler,T. Zabel,Toma Stoica,J. M. Hartmann,Siegfried Mantl,Zoran Ikonic,Detlev Grützmacher,Hans Sigg,Jeremy Witzens,Dan Buca +15 more
TL;DR: In this paper, a group IV microdisk laser with significant improvements in lasing temperature and lasing threshold compared to the previously reported nonundercut Fabry-Perot type lasers is presented.
Journal ArticleDOI
Anomalous coiling of SiGe/Si and SiGe/Si/Cr helical nanobelts.
Li Zhang,Elisabeth Ruh,Detlev Grützmacher,Lixin Dong,D.J. Bell,Bradley J. Nelson,Christian Schönenberger +6 more
TL;DR: Making use of the anomalous scrolling, it is possible to fabricate three-dimensional helices with helicity angles less than 45 degrees, which is advantageous for micro- and nanoelectromechanical systems.
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Interface and Wetting Layer Effect on the Catalyst‐Free Nucleation and Growth of GaN Nanowires
Toma Stoica,Eli Sutter,R. Meijers,Ratan Debnath,Raffaella Calarco,Hans Lüth,Detlev Grützmacher +6 more
TL;DR: The formation of crystalline GaN nanoclusters as possible NW precursors in catalyst-free plasma-assisted MBE (PAMBE) growth is studied by high-resolution transmission electron microscopy (HRTEM) imaging.