41 citations · 85 across the 11 of their papers we have counts for
13 papers
High-Efficiency and Large Supercurrent Rectification with Superconducting Coil
Takumi Ichikawa, Daisuke Takegami, Gen Nishijima +8
Superconducting diodes (SDs) are devices that rectify supercurrent through the difference in the superconducting critical current (Ic) between forward and reverse current direction…
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…
Distinct Roles of Hydrogen in Superconducting and Ferromagnetic Phases of CoZrH
Yuto Watanabe, Takayoshi Katase, Daisuke Takegami +1
Hydrogenation offers a versatile route to tuning the physical properties of intermetallic compounds. In this study, we synthesized CoZrH with different hydrogen content…
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…
Liquid-state structural asymmetry governs species-selective crystallization in multicomponent systems
Rikuya Ishikawa, Kyohei Takae, Daisuke Takegami +2
Multicomponent crystals are often assumed to form nearly random solid solutions when thermodynamically stable. However, crystal growth proceeds from structurally heterogeneous liqu…
Yb 4f-Ta 5d Hybridization and Valence Evolution in Tetragonal Tungsten Bronze Ba(3-x)YbxTa5O15
Daisuke Takegami, Haruki Takei, Masato Yoshimura +2
Here we investigate the electronic structure of the tetragonal tungsten bronze BaYbTaO by making use of hard x-ray photoemission spectroscopy. The core lev…
Stabilization of U 5 configuration in UTe through U 6d dimers in the presence of Te2 chains
Denise S. Christovam, Martin Sundermann, Andrea Marino +16
We investigate the topological superconductor candidate UTe using high-resolution valence-band resonant inelastic x-ray scattering at the U -edges. We observe atomic-l…
Charge transfer energy in iridates: a hard x-ray photoelectron spectroscopy study
D. Takegami, D. Kasinathan, K. K. Wolff +20
We have investigated the electronic structure of iridates in the double perovskite crystal structure containing either Ir or Ir using hard x-ray photoelectron spectro…
Impact of Fe substitution on the electronic structure of URuSi
Martin Sundermann, Andrea Amorese, Daisuke Takegami +9
The application of pressure as well as the successive substitution of Ru with Fe in the hidden order (HO) compound URuSi leads to the formation of the large moment antiferr…
Dual nature of 5 electrons in the isostructural UMSi family: from antiferro- to Pauli paramagnetism via hidden order
Andrea Amorese, Martin Sundermann, Brett Leedahl +16
Using inelastic x-ray scattering beyond the dipole limit and hard x-ray photoelectron spectroscopy we establish the dual nature of the U electrons in UMSi (M = Pd, Ni,…
Growth monitoring with sub-monolayer sensitivity via real time thermal conductance measurements
P. Ferrando-Villalba, D. Takegami, Ll. Abad +4
Growth monitoring during the early stages of film formation is of prime importance to understand the growth process, the microstructure and thus the overall layer properties. In th…
Electronic signature of the vacancy ordering in NbO (Nb3O3)
A. K. Efimenko, N. Hollmann, K. Hoefer +15
We investigated the electronic structure of the vacancy-ordered 4d-transition metal monoxide NbO (Nb3O3) using angle-integrated soft- and hard-x-ray photoelectron spectroscopy as w…