18 citations · 55 across the 7 of their papers we have counts for
8 papers
Charge-Transfer Electronic Structure of NiX (X = S, Se)
Atsushi Hariki, Takaki Okauchi, Daisuke Takegami +8
We investigate the electronic structures of NiS and NiSe using density functional theory combined with dynamical mean-field theory (DFT+DMFT). A realistic electronic struct…
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…
Valency, charge-transfer, and orbital-dependent correlation in bilayer nickelates Nd3Ni2O7
Daisuke Takegami, Takaki Okauchi, Edgar Abarca Morales +14
We examine the bulk electronic structure of Nd3Ni2O7 using Ni 2p core-level hard x-ray photoemission spectroscopy combined with density functional theory + dynamical mean-field the…
Circular Dichroism in Resonant Inelastic X-ray Scattering: Probing Altermagnetic Domains in MnTe
D. Takegami, T. Aoyama, T. Okauchi +11
X-ray magnetic circular dichroism provides a means to identify ferromagnetic, chiral, and altermagnetic orders via their time-reversal-symmetry () breaking. However, d…
Magnetic Dichroism in Rutile NiF: Separating Altermagnetic and Ferromagnetic Effects
A. Hariki, K. Sakurai, T. Okauchi +1
We present numerical simulations of x-ray magnetic circular dichroism (XMCD) at the L edge of Ni in the weakly ferromagnetic altermagnet NiF. Our results predict a sign…
Determination of the Néel vector in rutile altermagnets through x-ray magnetic circular dichroism: the case of MnF
A. Hariki, T. Okauchi, Y. Takahashi +1
We present a numerical simulation of the X-ray magnetic circular dichroism (XMCD) at the edge of Mn in altermagnetic MnF using a combination of density functional + e…
Fingerprints of Mott and Slater gaps in the core-level photoemission spectra of antiferromagnetic iridates
K. Nakagawa, A. Hariki, T. Okauchi +15
We present Ir core-level hard-x-ray photoemission spectroscopy (HAXPES) experiments conducted across antiferromagnetic (AFM) ordering transition in Ruddlesden-Popper iridates…
Quantifying the U covalence and degree of localization in U intermetallics
Andrea Marino, Denise S. Christovam, Daisuke Takegami +17
A procedure for quantifying the U electrons' covalence and degree of localization in U intermetallic compounds is presented. To this end, bulk sensitive hard and soft x-ray ph…