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Effect of density of states peculiarities on Hund's metal behavior
A. S. Belozerov, A. A. Katanin, V. I. Anisimov
We investigate a possibility of Hund's metal behavior in the Hubbard model with asymmetric density of states having peak(s). Specifically, we consider the degenerate two-band model…
Local magnetic moments in iron and nickel at ambient and Earth's core conditions
A. Hausoel, M. Karolak, E. Sasioglu +5
Some Bravais lattices have a particular geometry that can slow down the motion of Bloch electrons by pre-localization due to the band-structure properties. Another known source of…
Kohn anomalies in momentum dependence of magnetic susceptibility of some three-dimensional systems
A. A. Stepanenko, D. O. Volkova, P. A. Igoshev +1
We study a question of presence of Kohn points, yielding at low temperatures non-analytic momentum dependence of magnetic susceptibility near its maximum, in electronic spectum of…
Monte Carlo study of magnetic nanoparticles adsorbed on halloysite nanotubes
O. M. Sotnikov, V. V. Mazurenko, A. A. Katanin
We study properties of magnetic nanoparticles adsorbed on the halloysite surface. For that a distinct magnetic Hamiltonian with random distribution of spins on a cylindrical surfac…
Momentum-dependent susceptibilities and magnetic exchange in bcc iron from supercell DMFT calculations
A. S. Belozerov, A. A. Katanin, V. I. Anisimov
We analyze the momentum- and temperature dependences of the magnetic susceptibilities and magnetic exchange interaction in paramagnetic bcc iron by a combination of density functio…
Diagrammatic routes to nonlocal correlations beyond dynamical mean field theory
G. Rohringer, H. Hafermann, A. Toschi +6
Strong electronic correlations pose one of the biggest challenges to solid state theory. We review recently developed methods that address this problem by starting with the local,…