M
M. Knupfer
Researcher at Leibniz Institute for Solid State and Materials Research
Publications - 203
Citations - 5146
M. Knupfer is an academic researcher from Leibniz Institute for Solid State and Materials Research. The author has contributed to research in topics: Electronic structure & Angle-resolved photoemission spectroscopy. The author has an hindex of 39, co-authored 203 publications receiving 4881 citations. Previous affiliations of M. Knupfer include Université de Namur & Chemnitz University of Technology.
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(pi, pi) electronic order in iron arsenide superconductors.
V. B. Zabolotnyy,Dmytro S. Inosov,Daniil Evtushinsky,Andreas Koitzsch,A. A. Kordyuk,G. L. Sun,Jitae Park,D. Haug,Vladimir Hinkov,Alexander Boris,Alexander Boris,Chengtian Lin,M. Knupfer,Alexander Yaresko,Bernd Büchner,Andrei Varykhalov,Rolf Follath,Sergey Borisenko +17 more
TL;DR: It is reported that the electronic structure of Ba1-xKxFe2As2 is in sharp disagreement with band structure calculations, and instead reveals a reconstruction characterized by a (π, π) wavevector.
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Fluorination of copper phthalocyanines: Electronic structure and interface properties
TL;DR: In this article, the electronic properties of differently fluorinated copper phthalocyanines (CuPC, CuPCF4, and CuPCf16) were compared using x-ray and ultraviolet spectroscopy.
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Observation of a universal donor-dependent vibrational mode in graphene
A. V. Fedorov,N. I. Verbitskiy,Danny Haberer,Claudia Struzzi,Luca Petaccia,Dmitry Yu. Usachov,Oleg Yu. Vilkov,Denis V. Vyalikh,Jörg Fink,M. Knupfer,Bernd Büchner,Alexander Grüneis +11 more
TL;DR: It is shown that an unexpected low-energy peak appears for all dopants with an energy and intensity that depend on the dopant atom and is the result of a dopant-related vibration, with Ca being the most promising candidate for realizing superconductivity in graphene.
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Novel catalysts, room temperature, and the importance of oxygen for the synthesis of single-walled carbon nanotubes.
Mark H. Rümmeli,Ewa Borowiak-Palen,Thomas Gemming,Thomas Pichler,M. Knupfer,Martin Kalbac,Lothar Dunsch,O. Jost,S. Ravi P. Silva,Wolfgang Pompe,Bernd Büchner +10 more
TL;DR: The use of metal oxides as catalysts in the synthesis of single-walled carbon nanotubes (SWCNTs) using laser ablation is shown for the first time, and the data point to a nucleation mechanism previously not identified, that places a stable oxidized ring as the root cause for the growth of SWC NTs.
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Electronic structure of partially fluorinated copper phthalocyanine (CuPCF4) and its interface to Au(100)
Heiko Peisert,M. Knupfer,J. Fink +2 more
TL;DR: In this article, a study of the organic semiconductor copper tetrafluorophthalocyanine (CuPCF4) on single crystalline Au(1.0.0) using photoemission spectroscopy is presented.