59 citations · 105 across the 5 of their papers we have counts for
6 papers
Interconnected Renormalization of Hubbard Bands and Green's Function Zeros in Mott Insulators Induced by Strong Magnetic Fluctuations
Evgeny A. Stepanov, Maria Chatzieleftheriou, Niklas Wagner +1
We analyze the role of spatial electronic correlations and, in particular, of the magnetic fluctuations in Mott insulators. A half-filled Hubbard model is solved at large strength…
Edge zeros and boundary spinons in topological Mott insulators
Niklas Wagner, Daniele Guerci, Andrew J. Millis +1
We introduce a real-space slave rotor theory of the physics of topological Mott insulators, using the Kane-Mele-Hubbard model as an example, and use it to show that a topological g…
Interacting nodal semimetals with non-linear bands
Arianna Poli, Niklas Wagner, Max Fischer +3
We investigate the quasi-particle and transport properties of a model describing interacting Dirac and Weyl semimetals in the presence of local Hubbard repulsion , where we expl…
Mott insulators with boundary zeros
Niklas Wagner, Lorenzo Crippa, Adriano Amaricci +9
The topological classification of electronic band structures is based on symmetry properties of Bloch eigenstates of single-particle Hamiltonians. In parallel, topological field th…
Resistivity Exponents in 3D-Dirac Semimetals From Electron-Electron Interaction
Niklas Wagner, Sergio Ciuchi, Alessandro Toschi +2
We study the resistivity of three-dimensional semimetals with linear dispersion in the presence of on-site electron-electron interaction. The well-known quadratic temperature depen…
Non-Local Annihilation of Weyl Fermions in Correlated Systems
L. Crippa, A. Amaricci, N. Wagner +3
Weyl semimetals (WSMs) are characterized by topologically stable pairs of nodal points in the band structure, that typically originate from splitting a degenerate Dirac point by br…