462 citations · 6.7k across the 144 of their papers we have counts for
9 papers · 1 filter
Truncated Unity Parquet Solver
Christian J. Eckhardt, Carsten Honerkamp, Karsten Held +1
We present an implementation of a truncated unity parquet solver (TUPS) which solves the parquet equations using a truncated form-factor basis for the fermionic momenta. This way f…
Parquet dual fermion approach for the Falicov-Kimball model
Katharina Astleithner, Anna Kauch, Tin Ribic +1
In the Falicov-Kimball model, a model for (annealed) disorder, we expect weak localization corrections to the optical conductivity. However, we get such weak localization effects o…
Topotactic hydrogen in nickelate superconductors and akin infinite-layer oxides ABO2
Liang Si, Wen Xiao, Josef Kaufmann +4
Superconducting nickelates appear to be difficult to synthesize. Since the chemical reduction of ABO3 (A: rare earth; B transition metal) with CaH2 may result in both, ABO2 and ABO…
Zero field splitting of heavy-hole states in quantum dots
G. Katsaros, J. Kukučka, L. Vukušić +5
Using inelastic cotunneling spectroscopy, we observe a 55μeV zero field splitting in the spin triplet manifold of Ge hut wire quantum dots. The degeneracy of the heavy hole triplet…
Electronic and Magnetic State of LaMnO Epitaxially Strained on SrTiO: Effect of Local Correlation and Non-local Exchange
Hrishit Banerjee, Oleg Janson, Karsten Held +1
Motivated by the puzzling report of the observation of a ferromagnetic insulating state in LaMnO/SrTiO heterostructures, we calculate the electronic and magnetic state of L…
Symmetric Improved Estimators for Continuous-time Quantum Monte Carlo
Josef Kaufmann, Patrik Gunacker, Alexander Kowalski +2
We derive equations of motion for Green's functions of the multi-orbital Anderson impurity model by differentiating symmetrically with respect to all time arguments. The resulting…