49 citations · 164 across the 8 of their papers we have counts for
8 papers
Antiferromagnetic magnons and local anisotropy: dynamical mean-field study
A. Niyazi, D. Geffroy, J. Kunes
We present a dynamical mean-field study of antiferromagnetic magnons in one-, two- and three-orbital Hubbard model of square and bcc cubic lattice at intermediate coupling strength…
Dynamical response and competing orders in two-band Hubbard model
A. Niyazi, D. Geffroy, J. Kuneš
We present a dynamical mean-field study of two-particle dynamical response functions in two-band Hubbard model across several phase transitions. We observe that the transition betw…
Sparse sampling and tensor network representation of two-particle Green's functions
Hiroshi Shinaoka, Dominique Geffroy, Markus Wallerberger +4
Many-body calculations at the two-particle level require a compact representation of two-particle Green's functions. In this paper, we introduce a sparse sampling scheme in the Mat…
Collective Modes in Excitonic Magnets: Dynamical Mean-Field Study
D. Geffroy, J. Kaufmann, A. Hariki +3
We present a dynamical mean-field study of dynamical susceptibilities in two-band Hubbard model. Varying the model parameters we analyze the two-particle excitations in the normal…
Excitonic magnet in external field: complex order parameter and spin currents
D. Geffroy, A. Hariki, J. Kunes
We investigate spin-triplet exciton condensation in the two-orbital Hubbard model close to half filling by means of dynamical mean-field theory. Employing an impurity solver that h…
Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots
Petr Klenovský, Petr Steindl, Dominique Geffroy
In this work we study theoretically and experimentally the multi-particle structure of the so-called type-II quantum dots with spatially separated electrons and holes. Our calculat…