26 citations · 169 across the 18 of their papers we have counts for
18 papers
Altermagnetic Anomalous Hall Effect and Spin--Edge-Locked Chiral Modes in a Modified Kane--Mele--Hubbard Model
Mohsen Hafez-Torbati, Alireza Qaiumzadeh
We establish a correlation-driven route to the altermagnetic anomalous Hall effect (AHE) and its associated \emph{spin--edge-locked} edge states in a modified Kane--Mele--Hubbard m…
High-Temperature Quantum Anomalous Hall Effect in Buckled Honeycomb Antiferromagnets
Mohsen Hafez-Torbati, Götz S. Uhrig
We propose Néel antiferromagnetic (AF) Mott insulators with a buckled honeycomb structure as potential candidates to host a high-temperature AF Chern insulator (AFCI). Using a gene…
From explicit to spontaneous charge order and the fate of antiferromagnetic quantum Hall state
Mohsen Hafez-Torbati
The antiferromagnetic quantum Hall insulator (AFQHI), where one of the spin components is in the quantum Hall state and the other in the trivial state, is an established phase emer…
Antiferromagnetic topological insulators in heavy-fermion systems
Mohsen Hafez-Torbati
The cooperation of electronic correlation and spin-orbit coupling can stabilize magnetic topological insulators which host novel quantum phenomena such as the quantum anomalous Hal…
Antiferromagnetic Chern insulator with large charge gap in heavy transition-metal compounds
Mohsen Hafez-Torbati, Götz S. Uhrig
Despite the discovery of multiple intrinsic magnetic topological insulators in recent years the observation of Chern insulators is still restricted to very low temperatures due to…
Antiferromagnetic Chern insulator in centrosymmetric systems
Morad Ebrahimkhas, Götz S. Uhrig, Walter Hofstetter +1
An antiferromagnetic Chern insulator (AFCI) can exist if the effect of the time-reversal transformation on the electronic state cannot be compensated by a space group operation. Th…
Simplified approach to the magnetic blue shift of Mott gaps
Mohsen Hafez-Torbati, Frithjof B. Anders, Götz S. Uhrig
The antiferromagnetic ordering in Mott insulators upon lowering the temperature is accompanied by a transfer of the single-particle spectral weight to lower energies and a shift of…
Double-Exchange Enhanced Magnetic Blue-Shift of Mott Gaps
Mohsen Hafez-Torbati, Davide Bossini, Frithjof B. Anders +1
A substantial energy gap of charge excitations induced by strong correlations is the characteristic feature of Mott insulators. We study how the Mott gap is affected by long-range…
Lattice symmetry and emergence of antiferromagnetic quantum Hall states
Morad Ebrahimkhas, Mohsen Hafez-Torbati, Walter Hofstetter
Strong local interaction in systems with non-trivial topological bands can stabilize quantum states such as magnetic topological insulators. We investigate the influence of the lat…
Interaction-driven topological phase transitions in fermionic SU() systems
Mohsen Hafez-Torbati, Jun-Hui Zheng, Bernhard Irsigler +1
We consider SU() fermions on the triangular lattice in the presence of a gauge potential which stabilizes a quantum Hall insulator (QHI) at the density of one particle per latti…
Competing Charge and Magnetic Order in Fermionic Multi-Component Systems
Mohsen Hafez-Torbati, Walter Hofstetter
We consider the fermionic SU() Hubbard model on the triangular lattice in the presence of a three-sublattice staggered potential which provides the possibility to investigate th…
Spin-imbalance-induced transverse magnetization in the Hofstadter-Hubbard model
Bernhard Irsigler, Jun-Hui Zheng, Mohsen Hafez-Torbati +1
The fermionic, time-reversal invariant Hofstadter-Hubbard model with a population difference between the two spin states is investigated. In the strongly interacting regime, where…
Density-wave steady-state phase of dissipative ultracold fermions with nearest-neighbor interactions
Jaromir Panas, Michael Pasek, Arya Dhar +6
In this work we investigate the effect of local dissipation on the presence of density-wave ordering in spinful fermions with both local and nearest-neighbor interactions as descri…
Artificial Spin-Orbit Coupling and Exotic Mott Insulators
Mohsen Hafez-Torbati, Walter Hofstetter
Motivated by recent progress in the realization of artificial gauge fields and Mott insulators using alkaline-earth-like atoms in optical lattices, we develop an unbiased $…
Singlet exciton condensation and bond-order-wave phase in the extended Hubbard model
Mohsen Hafez-Torbati, Götz S. Uhrig
The competition of interactions implies the compensation of standard mechanisms which leads to the emergence of exotic phases between conventional phases. The extended Hubbard mode…
Massive spinons in spin chains: spinon-pair operator representation
Mohsen Hafez-Torbati, Götz S. Uhrig
Spinons are among the generic excitations in one-dimensional spin systems, they can be massless or massive. The quantitative description of massive spinons poses a considerable cha…
Orientational bond and Néel order in the two-dimensional ionic Hubbard model
Mohsen Hafez-Torbati, Götz S. Uhrig
Unconventional phases often occur where two competing mechanisms compensate. An excellent example is the ionic Hubbard model where the alternating local potential , favoring a b…
From Gapped Excitons to Gapless Triplons in One Dimension
Mohsen Hafez Torbati, Nils A. Drescher, Götz S. Uhrig
Often, exotic phases appear in the phase diagrams between conventional phases. Their elementary excitations are of particular interest. Here, we consider the example of the ionic H…