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
Electronic structure of the organic semiconductor copper phthalocyanine: experiment and theory.
V. Yu. Aristov,O. V. Molodtsova,V. V. Maslyuk,Denis V. Vyalikh,V. M. Zhilin,Yu. A. Ossipyan,Thomas Bredow,Ingrid Mertig,M. Knupfer +8 more
TL;DR: The experimentally obtained electronic valence band structure of CuPc is in very good agreement with the calculated density of states results, allowing the derivation of detailed site specific information.
Journal ArticleDOI
The electronic properties of potassium doped copper-phthalocyanine studied by electron energy-loss spectroscopy.
TL;DR: The authors discuss the changes in the electronic excitations upon doping on the basis of the molecular electronic levels and the presence of electronic correlations as well as taking into account the C1s and K2p core level excitations and recent results.
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Proof for trivalent Sc ions in Sc-2 @ C-84 from high-energy spectroscopy
Thomas Pichler,Zhiwei Hu,C. Grazioli,S. Legner,M. Knupfer,Mark S. Golden,J. Fink,F. M. F. de Groot,Michael R. C. Hunt,Petra Rudolf,Rolf Follath,Ch. Jung,L. Kjeldgaard,Paul A. Brühwiler,M. Inakuma,Hisanori Shinohara +15 more
TL;DR: In this paper, the electronic structure and the valency of the Sc ions in the endohedral dimetallofullerene with D 2d symmetry were probed using high-energy spectroscopy.
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An electron energy-loss study of the structural and electronic properties of magnetically aligned single wall carbon nanotubes
Xianjie Liu,Thomas Pichler,M. Knupfer,Mark S. Golden,J. Fink,D. A. Walters,M. J. Casavant,Judith Schmidt,Richard E. Smalley +8 more
TL;DR: In this article, momentum-dependent electron energy-loss studies of magnetically aligned bundles of single wall carbon nanotubes were performed and the anisotropy in electron diffraction and Cis absorption spectra was shown.
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Disentangling surface and bulk photoemission using circularly polarized light
V. B. Zabolotnyy,Sergey Borisenko,A. A. Kordyuk,Dmytro S. Inosov,Andreas Koitzsch,Jochen Geck,J. Fink,M. Knupfer,Bernd Büchner,S.-L. Drechsler,Vladimir Hinkov,Bernhard Keimer,L. Patthey +12 more
TL;DR: In this article, angle resolved photoemission spectroscopy ARPES, near-surface induced fields can be useful for disentangling the surface and bulk related emission, where the jump of the dielectric function at the interface results in a nonzero term div A in the photo emission matrix element and leads to circular dichroism for the states localized therein.