200 citations · 861 across the 28 of their papers we have counts for
8 papers · 1 filter
Luttinger surface and exchange splitting induced by ferromagnetic fluctuations
Motoharu Kitatani, Yusuke Nomura, Shiro Sakai +1
Ferromagnetism in the single-orbital Hubbard model, which contains only local Coulomb repulsion and no explicit ferromagnetic exchange interactions, has been extensively studied. H…
Two distinct quantum critical behaviors in the doped two-dimensional periodic Anderson model
M. Kitatani, T. Schäfer, A. A. Katanin +2
We study quantum criticality in the doped two-dimensional periodic Anderson model with the hybridization acting as a tuning parameter. Employing the dynamical vertex approximation…
Entanglement in the pseudogap regime of cuprate superconductors
Frederic Bippus, Juraj Krsnik, Motoharu Kitatani +4
We find a strongly enhanced entanglement within the pseudogap regime of the Hubbard model. This entanglement is estimated from the quantum Fisher information and, avoiding the ill-…
Superconducting phase diagram of finite-layer nickelates NdNiO
Andreas Hausoel, Simone Di Cataldo, Motoharu Kitatani +2
Following the successful prediction of the superconducting phase diagram for infinite-layer nickelates, here we calculate the superconducting vs. the number of lay…
Natural orbital impurity solver for real-frequency properties at finite temperature
Motoharu Kitatani, Shiro Sakai, Ryotaro Arita
We extend the natural orbital impurity solver [PRB 90, 085102 (2014)] to finite temperatures and apply it to calculate spectral and transport properties of correlated electrons wit…
Self-consistent ladder DA approach
Josef Kaufmann, Christian Eckhardt, Matthias Pickem +3
We present and implement a self-consistent DA approach for multi-orbital models and ab initio materials calculations. It is applied to the one-band Hubbard model at various inte…
Interplay between magnetic and superconducting fluctuations in the doped 2d Hubbard model
Anna Kauch, Felix Hörbinger, Motoharu Kitatani +2
We study the Hubbard model on a square lattice, using the dynamical vertex approximation and the parquet approximation. These methods allow us to describe the mutual interference o…
Quantum criticality in the two-dimensional periodic Anderson model
T. Schäfer, A. A. Katanin, M. Kitatani +2
We study the phase diagram and quantum critical region of one of the fundamental models for electronic correlations: the periodic Anderson model. Employing the recently developed d…