Klaus Koepernik
Leibniz Association
99 Papers
473 Citations
Klaus Koepernik is an academic researcher from Leibniz Association. The author has contributed to research in topics: Density functional theory & Electronic structure. The author has an hindex of 30, co-authored 95 publications. Previous affiliations of Klaus Koepernik include Max Planck Society & Dresden University of Technology.
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Papers
Orbital control of effective dimensionality: from spin-orbital fractionalization to confinement in the anisotropic ladder system CaCu(2)O(3).
Valentina Bisogni,Valentina Bisogni,Krzysztof Wohlfeld,Krzysztof Wohlfeld,Satoshi Nishimoto,Claude Monney,Claude Monney,J. Trinckauf,Ke-Jin Zhou,Roberto Kraus,Klaus Koepernik,Chinnathambi Sekar,Vladimir N. Strocov,Bernd Büchner,Thorsten Schmitt,Jeroen van den Brink,Jochen Geck +16 more
TL;DR: It is concluded that the directional character of the orbital hopping can select different degrees of dimensionality in the spin and orbital excitations of the anisotropic ladder material CaCu_{2}O_{3}, whose electronic structure is not one dimensional.
Superconducting rare earth transition metal borocarbides
Stefan-Ludwig Drechsler,S. V. Shulga,Karl-Hartmut Müller,G. Fuchs,J. Freudenberger,Günter Behr,H. Eschrig,Ludwig Schultz,Mark S. Golden,H. von Lips,J. Fink,V. N. Narozhnyi,Helge Rosner,Peter Zahn,A. Gladun,D. Lipp,A. Kreyssig,M. Loewenhaupt,Klaus Koepernik,K. Winzer,K. Krug +20 more
TL;DR: In this paper, the electronic structure of selected properties of quaternary intermetallic rare earth transition metal borocarbides and related boronitride compounds was investigated.
Transition metal dimers as potential molecular magnets: A challenge to computational chemistry.
TL;DR: In this article, the magnetic anisotropy energy (MAE) of 3D and 4D transition metal dimers is estimated by relativistic density functional calculations based on a fullpotential local-orbital method (FPLO) in a four-component Dirac-Kohn-Sham implementation.
Prediction of first-order martensitic transitions in strained epitaxial films
TL;DR: In this article, it was shown that the relationship between the lattice parameters of the overlayer in the interface plane and its minimum energy out-of-plane lattice parameter need not be continuous.
Spin and orbital magnetism in full Heusler alloys: A density functional theory study of Co 2 Y Z ( Y = Mn , Fe ; Z = Al , Si , Ga , Ge )
TL;DR: In this paper, the effect of spin-orbit coupling and orbital polarization corrections on the spin and orbital magnetism of full Heusler alloys is investigated by means of local spin-density calculations.