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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Journal ArticleDOI
Reduced diameter distribution of single-wall carbon nanotubes by selective oxidation
E. Borowiak-Palen,Thomas Pichler,Xianjie Liu,M. Knupfer,A. Graff,O. Jost,W. Pompe,Ryszard J. Kalenczuk,J. Fink +8 more
TL;DR: In this article, the diameter distribution of single-walled carbon nanotubes (SWNT) by oxidization treatments was reduced by a factor of 2.5 by using 2 M HNO3 and a reduced O2 atmosphere.
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Momentum-resolved superconducting gap in the bulk of Ba$_{1-x}$K$_{x}$Fe$_2$As$_2$ from combined ARPES and $μ$SR measurements
Daniil Evtushinsky,Dmytro S. Inosov,V. B. Zabolotnyy,Maryna Viazovska,Rustem Khasanov,Anthony A. Amato,Hans-Henning Klauss,H. Luetkens,Ch. Niedermayer,G. L. Sun,Vladimir Hinkov,Chengtian Lin,Andrei Varykhalov,Andreas Koitzsch,M. Knupfer,Bernd Büchner,A. A. Kordyuk,Sergey Borisenko +17 more
TL;DR: In this article, the authors presented a calculation of the temperature-dependent London penetration depth in Ba${1-x}$K$_{x})$Fe$_2$As$_ 2$ (BKFA) on the basis of the electronic band structure and momentum-dependent superconducting gap extracted from angle-resolved photoemission spectroscopy (ARPES) data.
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Bulk synthesis of carbon-filled silicon carbide nanotubes with a narrow diameter distribution
Ewa Borowiak-Palen,Mark H. Ruemmeli,Thomas Gemming,M. Knupfer,K. Biedermann,Albrecht Leonhardt,Thomas Pichler,Ryszard J. Kalenczuk +7 more
TL;DR: In this paper, a simple and low-cost route to produce SiC nanotubes without the need for the more usual oxide-based reactions using a high temperature substitution reaction between multiwall carbon nanotsubes as a frame and Si powder was reported.
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J eff Description of the Honeycomb Mott Insulator α − RuCl 3
Andreas Koitzsch,C. Habenicht,Eric A. Muller,M. Knupfer,Bernd Büchner,H. C. Kandpal,J. van den Brink,Domenic Nowak,Anna Isaeva,Th. Doert +9 more
TL;DR: It is found that α-RuCl_{3} is a Mott insulator with significant spin-orbit coupling, whose low energy electronic structure is naturally mapped onto J_{eff} states, a promising candidate for the realization of Kitaev physics.
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Electronic properties of transition metal phthalocyanines: The impact of the central metal atom (d5–d10)
TL;DR: In this article, a combined spectroscopic investigation of transition metal phthalocyanines (TMPc) has been carried out using electron energy-loss spectroscopy and photo-emission spectrographs.