6 papers
Momentum-Selective Electron and Spin Dynamics under Ultrafast Photoexcitation
Gusein Bedirkhanov, Nagamalleswararao Dasari, Alexander I. Lichtenstein +1
Recent advances in time-resolved spectroscopies have enabled direct access to the momentum-selective nonequilibrium dynamics of correlated quantum materials, revealing a strongly m…
Emergent Topology from Nonlocal Electronic Correlations in One Dimension
Félix Fossati, Erik Linnér, Evgeny A. Stepanov
We demonstrate that electronic correlations in low-dimensional systems can induce topological phases starting from a topologically trivial noninteracting band structure. Using an a…
Non-Fermi-liquid behaviour and Fermi-surface expansion induced by van Hove-driven ferromagnetic fluctuations: the D-TRILEX analysis
Ilia S. Dedov, Andrey A. Katanin, Evgeny A. Stepanov
We consider the electronic and magnetic properties of the Hubbard model on a square lattice with the Fermi level near van Hove singularity and the ratio of the next-nearest-neighbo…
Fingerprints of a charge ice state in the doped Mott insulator NbCl
Evgeny A. Stepanov
The interplay between strong electronic correlations and the inherent frustration of certain lattice geometries is a common mechanism for the formation of nontrivial states of matt…
Superconductivity of Bad Fermions: Origin of Two Gaps in HTSC Cuprates
E. A. Stepanov, S. Iskakov, M. I. Katsnelson +1
We investigate the spectral properties of the doped Hubbard model with parameters typical for high-temperature cuprate superconductors. Our approach is based on a novel st…
Orbital-Selective Diffuse Magnetic Fluctuations in SrRuO: a Unified Theoretical Picture
Maria Chatzieleftheriou, Alexander N. Rudenko, Yvan Sidis +2
The quasi-two-dimensional material SrRuO is a paradigmatic example of a correlated system that exhibits unconventional superconductivity and intriguing magnetic properties.…