56 citations · 290 across the 16 of their papers we have counts for
8 papers · 1 filter
Suppression of local magnetic moment formation and paramagnetic exchange interactions in monolayer FeGeTe
A. A. Katanin, A. N. Rudenko, D. I. Badrtdinov +1
We study the electronic and magnetic properties of monolayer FeGeTe within the DFT+DMFT approach in the paramagnetic phase. We argue that this compound is sufficiently far…
Topological entanglement entropy to identify topological order in quantum skyrmions
Vipin Vijayan, L. Chotorlishvili, A. Ernst +3
We study the topological entanglement entropy and scalar chirality of a topologically ordered skyrmion formed in a two-dimensional triangular lattice. Scalar chirality remains a sm…
Topological dynamical quantum phase transition in a quantum skyrmion phase
Vipin Vijayan, L. Chotorlishvili, A. Ernst +3
Quantum skyrmionic phase is modelled in a 2D helical spin lattice. This topological skyrmionic phase retains its nature in a large parameter space before moving to a ferromagnetic…
Exchange interactions in iron and nickel: DFT+DMFT study in paramagnetic phase
A. A. Katanin, A. S. Belozerov, A. I. Lichtenstein +1
We analyze possible ways to calculate magnetic exchange interactions within the density functional theory plus dynamical mean-field theory (DFT+DMFT) approach in the paramagnetic p…
Sub-cycle multidimensional spectroscopy of strongly correlated materials
V. Valmispild, E. Gorelov, M. Eckstein +5
Strongly correlated solids are extremely complex and fascinating quantum systems, where new states continue to emerge, especially when interaction with light triggers interplay bet…
Spin dynamics of itinerant electrons: local magnetic moment formation and Berry phase
E. A. Stepanov, S. Brener, V. Harkov +2
The state-of-the-art theoretical description of magnetic materials relies on solving effective Heisenberg spin problems or their generalizations to relativistic or multi-spin-inter…
Excitonic instability and unconventional pairing in the nodal-line materials ZrSiS and ZrSiSe
M. M. Scherer, C. Honerkamp, A. N. Rudenko +3
We use a functional renormalization group (fRG) approach to investigate potential interaction-induced instabilities in a two-dimensional model for the Dirac nodal-line materials Zr…
Excitonic Instability and Pseudogap Formation in Nodal Line Semimetal ZrSiS
A. N. Rudenko, E. A. Stepanov, A. I. Lichtenstein +1
Electron correlation effects are studied in ZrSiS using a combination of first-principles and model approaches. We show that basic electronic properties of ZrSiS can be described w…