18 citations · 47 across the 12 of their papers we have counts for
12 papers
Probing La-based nickelates with Ni 1 core-level photoelectron spectroscopy
Daisuke Takegami, Naoki Ito, Koto Fujinuma +15
We present a comparative Ni core level photoemission study of LaNiO, NdNiO, and LaNiO using both the Ni and the Ni . We address the challenges…
UCd: A strongly localized 5 material
Martin Sundermann, Naoki Ito, Daisuke Takegami +11
UCd is an antiferromagnetic uranium intermetallic compound ( = 5.3K) with enhanced electron mass and uranium-uranium spacings nearly twice the Hill limit, suggest…
Nanoscale imaging of spin textures with locally varying altermagnetic response in -FeO
R. Yamamoto, S. Mayr, A. Hariki +20
Altermagnetism is a recently identified magnetic state in which time-reversal symmetry is broken despite a collinear compensated spin structure. The response of altermagnets is det…
X-ray magnetic circular dichroism evidence of intrinsic -wave altermagnetism in rutile-structure NiF
Zezhong Li, Kosuke Sakurai, Yiu-Fung Chiu +13
We present the x-ray magnetic circular dichroism (XMCD) at the Ni -edge as an evidence of the -wave altermagnetism in rutile-structure NiF. Sizable XMCD signal is o…
Signatures of bi-altermagnetism revealed by sublattice-specific circular dichroism in resonant inelastic X-ray scattering
G. Channagowdra, A. Singh, H. Y. Huang +9
An altermagnet is a recently identified class of magnets that exhibit a zero net magnetic moment but break symmetry under the combined operations of parity and time reversal. It ty…
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…
Theory of circular dichroism in resonant inelastic x-ray scattering
M. Furo, A. Hariki, J. Kuneš
We analyze circular dichroism (CD) in resonant inelastic x-ray scattering (RIXS) in magnetic materials. We define RIXS-CD as the difference between scattering amplitudes for the ri…
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…