Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR528 papers
- University of ViennaAT480 papers
- Vienna Center for Quantum Science and TechnologyAT328 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR275 papers
- European Organization for Nuclear ResearchCH263 papers
- Charles UniversityCZ245 papers
- ETH ZurichCH223 papers
- Institute of High Energy PhysicsCN223 papers
- Université Paris-SaclayFR219 papers
- CEA Paris-SaclayFR215 papers
- University of WarsawPL215 papers
- Massachusetts Institute of TechnologyUS209 papers
23 papers · 2 filters
Asymmetric band widening by screened exchange competing with local correlations in SrVO3: new surprises on an old compound from combined GW and dynamical mean field theory GW+DMFT
Jan M. Tomczak, Michele Casula, Takashi Miyake +1
The very first dynamical implementation of the combined GW and dynamical mean field scheme "GW+DMFT" for a real material was achieved recently [J.M. Tomczak et al., Europhys. Lett.…
Electronics with correlated oxides: SrVO/SrTiO as a Mott transistor
Zhicheng Zhong, Markus Wallerberger, Jan M. Tomczak +5
We employ density functional theory plus dynamical mean field theory and identify the physical origin of why two layers of SrVO on a SrTiO substrate are insulating: the thi…
Importance of d-p Coulomb interaction for high T cuprates and other oxides
Philipp Hansmann, Nicolaus Parragh, Alessandro Toschi +2
Current theoretical studies of electronic correlations in transition metal oxides typically only account for the local repulsion between d-electrons even if oxygen ligand p-states…
Nonmagnetic and ferromagnetic fcc cerium studied with one-electron methods
Fabien Tran, Ferenc Karsai, Peter Blaha
Density functional theory was used to study the nonmagnetic (NM) and ferromagnetic (FM) phases of face-centered cubic cerium. Functionals of four levels of approximations for the e…
Structural, Magnetic, and Electrical Properties of Li2Ir1-xRuxO3
Hechang Lei, Wei-Guo Yin, Zhicheng Zhong +1
The crystal structure, resistivity, and magnetic susceptibility of the Li2Ir1-xRuxO3 (x = 0-1) polycrystals have been investigated. We found that the parent antiferromagnetic phase…
Quantum Monte Carlo Simulations for Stacked Spin Ladder Systems Containing Low Concentrations of Non-Magnetic Impurities; Application to the Low Temperature Broadening of NMR-Spectra in SrCu2O3
Robert Achleitner, Hans Gerd Evertz, Masatoshi Imada +2
We present a Quantum Monte Carlo study for Heisenberg spin-1/2 two leg ladder systems doped with non magnetic impurities. The simulations are applied to the doped spin ladder compo…
Band filling effect on polaron localization in LaCaSr)MnO manganites
G. Allodi, R. De Renzi, K. Zheng +6
We report on an a SR and Mn NMR investigation of the magnetic order parameter as a function of temperature in the optimally doped La(CaSr)MnO$…
Correlation effects in transport properties of interacting nanostructures
A. Valli, G. Sangiovanni, A. Toschi +1
We discuss how to apply many-body methods to correlated nanoscopic systems, and provide general criteria of validity for a treatment at the dynamical mean field theory (DMFT) appro…
Highly Dispersive Electron Relaxation and Colossal Thermoelectricity in the Correlated Semiconductor FeSb
Peijie Sun, Wenhu Xu, Jan M. Tomczak +4
We show that the colossal thermoelectric power, , observed in the correlated semiconductor FeSb below 30\,K is accompanied by a huge Nernst coefficient and magneto…
Enhancement of antiferromagnetic interaction and transition temperature in M3TeO6 systems (M = Mn, Co, Ni, Cu)
R. Mathieu, S. A. Ivanov, P. Nordblad +1
Several M3 TeO6 (M = Mn, Co, Ni, Cu) oxides order antiferromagnetically at low temperatures (near or below 60 K), while displaying interesting dielectric properties at high tempera…
Double quantum dot as a minimal thermoelectric generator
S. Donsa, S. Andergassen, K. Held
Based on numerical renormalization group calculations, we demonstrate that experimentally realized double quantum dots constitute a minimal thermoelectric generator. In the Kondo r…
From infinite to two dimensions through the functional renormalization group
C. Taranto, S. Andergassen, J. Bauer +5
We present a novel scheme for an unbiased and non-perturbative treatment of strongly correlated fermions. The proposed approach combines two of the most successful many-body method…
ESR of the quasi-two-dimensional antiferromagnet with a triangular lattice CuCrO2
A. M. Vasiliev, L. A. Prozorova, L. E. Svistov +5
Using electron-spin-resonance (ESR) technique we investigate the magnetic structure of CuCrO2, quasi-two-dimensional antiferromagnet with weakly distorted triangular lattice. Reson…
Poor Man's Understanding of Kinks Originating from Strong Electronic Correlations
K. Held, R. Peters, A. Toschi
By means of dynamical mean field theory calculations, it was recently discovered that kinks generically arise in strongly correlated systems, even in the absence of external bosoni…
Identifying the electronic character and role of the Mn states in the valence band of (Ga,Mn)As
J. Fujii, B. R. Salles, M. Sperl +21
We report high-resolution hard x-ray photoemission spectroscopy results on (Ga,Mn)As films as a function of Mn doping. Supported by theoretical calculations we identify, over the e…
Theoretical prediction and spectroscopic fingerprints of an orbital transition in CeCu2Si2
Leonid V. Pourovskii, Philipp Hansmann, Michel Ferrero +1
We show that the heavy-fermion compound CeCu2Si2 undergoes a transition between two regimes dominated by different crystal-field states. At low pressure P and low temperature T the…
Quantum phase transitions in heavy fermion metals and Kondo insulators
Qimiao Si, Silke Paschen
Strongly correlated electron systems at the border of magnetism are of active current interest, particularly because the accompanying quantum criticality provides a route towards b…
Mott-Hubbard transition in V2O3 revisited
P. Hansmann, A. Toschi, G. Sangiovanni +4
The isostructural metal-insulator transition in Cr-doped V2O3 is the textbook example of a Mott-Hubbard transition between a paramagnetic metal and a paramagnetic insulator. We rev…
Effective crystal field and Fermi surface topology: a comparison of d- and dp-orbital models
N. Parragh, G. Sangiovanni, P. Hansmann +3
The effective crystal field in multi-orbital correlated materials can be either enhanced or reduced by electronic correlations with crucial consequences for the topology of the Fer…
Physics behind the minimum of relative entropy measures for correlations
K. Held, N. Mauser
The relative entropy of a correlated state and an uncorrelated reference state is a reasonable measure for the degree of correlations. A key question is however which uncorrelated…
Divergent Precursors of the Mott-Hubbard Transition at the Two-Particle Level
T. Schäfer, G. Rohringer, O. Gunnarsson +3
Identifying the fingerprints of the Mott-Hubbard metal-insulator transition may be quite elusive in correlated metallic systems if the analysis is limited to the single particle le…
Development of the Magnetic Excitations of Charge-Stripe Ordered La(2-x)Sr(x)NiO(4) on Doping Towards Checkerboard Charge Order
P. G. Freeman, S. R. Giblin, K. Hradil +2
The magnetic excitation spectrums of charge stripe ordered La(2-x)Sr(x)NiO(4) x = 0.45 and x = 0.4 were studied by inelastic neutron scattering. We found the magnetic excitation sp…
One-particle irreducible functional approach - a new route to diagrammatic extensions of DMFT
G. Rohringer, A. Toschi, H. Hafermann +3
We present an approach which is based on the one-particle irreducible (1PI) generating functional formalism and includes electronic correlations on all length-scales beyond the loc…