17 papers
Secondary Collective Excitations in Intermediate to Strong-Coupling Superconductors
Joshua Althüser, Götz S. Uhrig
Considering systematically derived energy-transfer-dependent effective electron-electron interactions leads to the appearance of secondary phase and amplitude modes in isotropic su…
First-principles simulation of spin diffusion in static solids using dynamic mean-field theory
Timo GräÃer, Götz S. Uhrig, Matthias Ernst
The dynamics of disordered nuclear spin ensembles are the subject of nuclear magnetic resonance studies. Due to the through-space long-range dipolar interaction generically many sp…
Control of the Néel vector in the quantum antiferromagnetic honeycomb lattice
Asliddin Khudoyberdiev, Dag-Björn Hering, Vanessa Sulaiman +1
The switching of antiferromagnetic order and its efficient control promise to enable ultrafast manipulation of data and large storage capacity. Recently, the time-dependent Schwing…
Dynamical mean-field theory for dense spin systems at finite temperature
PrzemysÅaw Bieniek, Przemysław Bieniek, Timo GräÃer +3
In recent years, a method for computing spin dynamics at infinite temperature (spinDMFT) was developed. It utilizes the ideas of dynamical mean-field theory for fermions: single-si…
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 gen…
Enhanced Superconductivity in Proximity to Peaks in Densities of States
Joshua Althüser, Ilya M. Eremin, Götz S. Uhrig
For the BCS theory of superconductivity, the electron-phonon interaction is transformed to an attractive electron-electron interaction in the vicinity of the Fermi energy only. At…