344 citations · 606 across the 11 of their papers we have counts for
9 papers · 1 filter
UTe: a narrow band superconductor
Martin Sundermann, Takaki Okauchi, Naoki Ito +10
We investigate the nature of the 5 electrons in the unconventional odd-parity superconductor UTe, focusing on the degree of covalency, localization versus itinerancy, and do…
Damping of spinful excitons in LaCoO by thermal fluctuations: Theory and experiment
Atsushi Hariki, Ru-Pan Wang, Andrii Sotnikov +7
We present Co -edge resonant inelastic x-ray scattering (RIXS) of bulk LaCoO across the thermally-induced spin-state crossover around 100~K. Owing to a high energy resolut…
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…
Antiferromagnetism in RuO as -wave Pomeranchuk instability
Kyo-Hoon Ahn, Atsushi Hariki, Kwan-Woo Lee +1
We present a computational study of antiferromagnetic transition in RuO. The rutile structure with the magnetic sublattices coupled by -rotation leads to a spin-polarized…
Pressure-induced spin-state ordering in SrCoOF
Juan Fernández Afonso, Andrii Sotnikov, Atsushi Hariki +1
We study theoretically low-temperature phases of a recently synthesized compound SrCoOF under pressure. The analysis combining LDA+DMFT and a strong-coupling effective mode…
Suppression and revival of long-range ferromagnetic order in the multiorbital Fermi-Hubbard model
Andrii Sotnikov, Agnieszka Cichy, Jan Kuneš
By means of dynamical mean-field theory allowing for complete account of SU(2) rotational symmetry of interactions between spin-1/2 particles, we observe a strong effect of suppres…
Competing phases in a model of Pr-based cobaltites
Andrii Sotnikov, Jan Kuneš
Motivated by the physics of Pr-based cobaltites, we study the effect of the external magnetic field in the hole-doped two-band Hubbard model close to instabilities toward the excit…
Spin state transition and covalent bonding in LaCoO3
V. Křápek, P. Novák, J. Kuneš +3
We use the dynamical mean-field theory to study a p-d Hubbard Hamiltonian for LaCoO3 derived from ab initio calculations in local density approximation (LDA+DMFT scheme). We addres…
{\it Ab initio} Studies on the Interplay between Spin-Orbit Interaction and Coulomb Correlation in SrIrO and BaIrO
R. Arita, J. Kuneš, A. V. Kozhevnikov +2
{\it Ab initio} analyses of AIrO (A=Sr, Ba) are presented. Effective Hubbard-type models for Ir 5 manifolds downfolded from the global band structure are solved…