Christoph Piefke
University of Hamburg
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Publication
Featured researches published by Christoph Piefke.
Physical Review B | 2012
Daniel Grieger; Christoph Piefke; Oleg E. Peil; Frank Lechermann
Examining phase stabilities and phase equilibria in strongly correlated materials asks for a next level in the many-body extensions to the local-density approximation (LDA) beyond mainly spectroscopic assessments. Here we put the charge-self-consistent LDA+dynamical mean-field theory (DMFT) methodology based on projected local orbitals for the LDA+DMFT interface and a tailored pseudopotential framework into action in order to address such thermodynamics of realistic strongly correlated systems. Namely a case study for the electronic phase diagram of the well-known prototype Mott-phenomena system V
Physical Review B | 2014
Frank Lechermann; Lewin Boehnke; Daniel Grieger; Christoph Piefke
_2
Physical Review B | 2015
Alexander Hampel; Christoph Piefke; Frank Lechermann
O
Physical Review B | 2012
Malte Behrmann; Christoph Piefke; Frank Lechermann
_3
Physica Status Solidi B-basic Solid State Physics | 2011
Christoph Piefke; Frank Lechermann
at higher temperatures is presented. We are able to describe the first-order metal-to-insulator transitions with negative pressure and temperature from the self-consistent computation of the correlated total energy in line with experimental findings.
Physical Review B | 2012
Sergej Schuwalow; Christoph Piefke; Frank Lechermann
We shed light on the interplay between structure and many-body effects relevant for itinerant ferromagnetism in
Physical Review B | 2010
Christoph Piefke; Lewin Boehnke; Antoine Georges; Frank Lechermann
\mathrm{La}\mathrm{Al}{\mathrm{O}}_{3}
Physical Review B | 2018
Christoph Piefke; Frank Lechermann
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arXiv: Strongly Correlated Electrons | 2017
Christoph Piefke; Frank Lechermann
\mathrm{Sr}\mathrm{Ti}{\mathrm{O}}_{3}
Bulletin of the American Physical Society | 2013
Frank Lechermann; Malte Behrmann; Christoph Piefke
heterostructures. The realistic correlated electronic structure is studied by means of the (spin-polarized) charge self-consistent combination of density-functional theory with dynamical mean-field theory beyond the realm of static correlation effects. Though many-body behavior is also active in the defect-free interface, a ferromagnetic instability occurs only with oxygen vacancies. A minimal Ti two-orbital