183 citations · 701 across the 14 of their papers we have counts for
14 papers
Coherent cellular dynamical mean-field theory: a real-space quantum embedding approach to disorder in strongly correlated electron systems
Patrick Tscheppe, Marcel Klett, Henri Menke +4
We formulate a quantum embedding algorithm in real-space for the simultaneous theoretical treatment of nonlocal electronic correlations and disorder, the coherent cellular dynamica…
Superconductivity and Mottness in Organic Charge Transfer Materials
Henri Menke, Marcel Klett, Kazushi Kanoda +3
The phase diagrams of quasi two-dimensional organic superconductors display a plethora of fundamental phenomena associated with strong electron correlations, such as unconventional…
Single-particle spectra and magnetic susceptibility in the Emery model: a dynamical mean-field perspective
Yi-Ting Tseng, Mário O. Malcolms, Henri Menke +3
We investigate dynamical mean-field calculations of the three-band Emery model at the one- and two-particle level for material-realistic parameters of high- superconductors. O…
Mott transition and pseudogap of the square-lattice Hubbard model: results from center-focused cellular dynamical mean-field theory
Michael Meixner, Henri Menke, Marcel Klett +4
The recently proposed center-focused post-processing procedure [Phys. Rev. Research 2, 033476 (2020)] of cellular dynamical mean-field theory suggests that central sites of large i…
Magnetism and Metallicity in Moiré Transition Metal Dichalcogenides
Patrick Tscheppe, Jiawei Zang, Marcel Klett +8
The ability to control the properties of twisted bilayer transition metal dichalcogenides in situ makes them an ideal platform for investigating the interplay of strong correlation…
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…
Magnetic properties and pseudogap formation in infinite-layer nickelates: insights from the single-band Hubbard model
Marcel Klett, Philipp Hansmann, Thomas Schäfer
We study the magnetic and spectral properties of a single-band Hubbard model for the infinite-layer nickelate compound LaNiO. As spatial correlations turn out to be the key ing…
Magnetic correlations in infinite-layer nickelates: an experimental and theoretical multi-method study
R. A. Ortiz, P. Puphal, M. Klett +12
We report a comprehensive study of magnetic correlations in LaNiO, a parent compound of the recently discovered family of infinite-layer (IL) nickelate superconductors, using…
Mott insulating states with competing orders in the triangular lattice Hubbard model
Alexander Wietek, Riccardo Rossi, Fedor Šimkovic +6
The physics of the triangular lattice Hubbard model exhibits a rich phenomenology, ranging from a metal-insulator transition, intriguing thermodynamic behavior, and a putative spin…
Tracking the Footprints of Spin Fluctuations: A MultiMethod, MultiMessenger Study of the Two-Dimensional Hubbard Model
Thomas Schäfer, Nils Wentzell, Fedor Šimkovic +23
The Hubbard model represents the fundamental model for interacting quantum systems and electronic correlations. Using the two-dimensional half-filled Hubbard model at weak coupling…
Real-space cluster dynamical mean-field theory: Center focused extrapolation on the one- and two particle level
Marcel Klett, Nils Wentzell, Thomas Schäfer +4
We revisit the cellular dynamical mean-field theory (CDMFT) for the single band Hubbard model on the square lattice at half filling, reaching real-space cluster sizes of up to 9 x…
Topological edge states in the Su-Schrieffer-Heeger model subject to balanced particle gain and loss
Marcel Klett, Holger Cartarius, Dennis Dast +2
We investigate the Su-Schrieffer-Heeger model in presence of an injection and removal of particles, introduced via a master equation in Lindblad form. It is shown that the dynamics…
Relation between -symmetry breaking and topologically nontrivial phases in the SSH and Kitaev models
Marcel Klett, Holger Cartarius, Dennis Dast +2
Non-Hermitian systems with symmetry can possess purely real eigenvalue spectra. In this work two one-dimensional systems with two different topological phases, the t…
State Flip at Exceptional Points in Atomic Spectra
Henri Menke, Marcel Klett, Holger Cartarius +2
We study the behavior of the non-adiabatic population transfer between resonances at an exceptional point in the spectrum of the hydrogen atom. It is known that, when the exception…