92 citations · 364 across the 17 of their papers we have counts for
17 papers
Allotropic transition of Dirac semimetal α-Sn to superconductor β-Sn induced by irradiation of focused ion beam
Kohdai Inagaki, Keita Ishihara, Tomoki Hotta +9
Diamond-type structure allotrope α-Sn is attracting much attention as a topological Dirac semimetal (TDS). In this study, we demonstrate that α-Sn undergoes a phase transition to a…
Charge correlation in VOPO probed by hard x-ray photoemission spectroscopy
K. Murota, E. Pachoud, J. P. Attfield +7
Electronic properties of VOPO have been investigated by means of hard x-ray photoemission spectroscopy (HAXPES) and subsequent theoretical calculations. The V 1 and 2…
Localized and mixed valence state of Ce in superconducting and ferromagnetic CeOFBiS revealed by x-ray absorption and photoemission spectroscopy
T. Sugimoto, D. Ootsuki, E. Paris +11
We have performed Ce -edge x-ray absorption spectroscopy (XAS) and Ce - resonant photoemission spectroscopy (PES) on single crystals of CeOFBiS for $x=…
Fermi surfaces and orbital polarization in superconducting CeOFBiS revealed by angle-resolved photoemission spectroscopy
T. Sugimoto, D. Ootsuki, C. Morice +18
We have investigated the electronic structure of BiS-based CeOFBiS superconductor using polarization-dependent angle-resolved photoemission spectroscopy (AR…
Electronic structure of Li[MnNi]O studied by photoemission and x-ray absorption spectroscopy
Y. Yokoyama, D. Ootsuki, T. Sugimoto +6
We have studied the electronic structure of Li[MnNi]O ( = 0.00 and 0.05), one of the promising cathode materials for Li ion battery, by means…
Suppression of the antiferromagnetic pseudogap in the electron-doped high-temperature superconductor by "protect annealing"
M. Horio, T. Adachi, Y. Mori +17
In the hole-doped cuprates, a small amount of carriers suppresses antiferromagnetism and induces superconductivity. In the electron-doped cuprates, on the other hand, superconducti…
Coexistence of localized and itinerant electrons in BaFe2X3 (X = S and Se) revealed by photoemission spectroscopy
D. Ootsuki, N. L. Saini, F. Du +4
We report a photoemission study at room temperature on BaFe2X3 (X = S and Se) and CsFe2Se3 in which two-leg ladders are formed by the Fe sites. The Fe 2p core-level peaks of BaFe2X…
Fate of / orbital degeneracy and Fermi surface in Ru substituted FeSeTe
T. Sugimoto, D. Ootsuki, K. Sawada +14
We have investigated the impact of Ru substitution on the multi-band electronic structure of FeSeTe by means of angle-resolved photoemission spectroscopy (ARPES). The A…
Effect of Pt substitution on the electronic structure of AuTe2
D. Ootsuki, K. Takubo, K. Kudo +12
We report a photoemission and x-ray absorption study on Au1-xPtxTe2 (x = 0 and 0.35) triangular lattice in which superconductivity is induced by Pt substitution for Au. Au 4f and T…
Spectromicroscopy of electronic phase separation in KFeSe superconductor
M. Bendele, A. Barinov, B. Joseph +14
Structural phase separation in AFeSe system has been studied by different experimental techniques, however, it should be important to know how the electronic unifor…
Coexistence of Bloch electrons and glassy electrons in Ca10(Ir4As8)(Fe2_xIrxAs2)5 revealed by angle-resolved photoemission spectroscopy
K. Sawada, D. Ootsuki, K. Kudo +9
Angle-resolved photoemission spectroscopy of Ca10(Ir4As8)(Fe2_xIrxAs2)5 shows that the Fe 3d electrons in the FeAs layer form the hole-like Fermi pocket at the zone center and the…
Bond-Order and the Role of Ligand States in Stripe-Modulated IrTe2
K. Takubo, R. Comin, D. Ootsuki +14
The coupled electronic-structural modulations of the ligand states in IrTe have been studied by x-ray absorption spectroscopy (XAS) and resonant elastic x-ray scattering (REXS)…
Te 5p orbitals bring three-dimensional electronic structure to two-dimensional Ir0.95Pt0.05Te2
D. Ootsuki, T. Toriyama, M. Kobayashi +13
We have studied the nature of the three-dimensional multi-band electronic structure in the twodimensional triangular lattice Ir1-xPtxTe2 (x=0.05) superconductor using angle-resolve…
Impact of Local Lattice Disorder on Spin and Orbital Orders in CaSrRuO
Takuya Sugimoto, Daiki Ootsuki, Takashi Mizokawa
We have studied relationship between local lattice disorder, Ru 4 spin-orbit interaction, and global spin/orbital orders of CaSrRuO in the Sr-rich and Ca-rich re…
Spin-charge-orbital ordering in hollandite-type manganites studied by model Hartree-Fock calculation
Makoto Fukuzawa, Daiki Ootsuki, Takashi Mizokawa
We investigate spin-charge-orbital ordering in a Mn/Mn mixed valence state on a hollandite-type lattice using unrestricted Hartree-Fock calculation on a multi-band Mn…
Electronic structure reconstruction by orbital symmetry breaking in IrTe2
D. Ootsuki, S. Pyon, K. Kudo +10
We report an angle-resolved photoemission spectroscopy (ARPES) study on IrTe2 which exhibits an interesting lattice distortion below 270 K and becomes triangular lattice supercondu…
Anomalous momentum dependence of the multiband electronic structure of FeSe_1-xTe_x superconductors induced by atomic disorder
Takaaki Sudayama, Yuki Wakisaka, Daiki Ootsuki +7
When periodicity of crystal is disturbed by atomic disorder, its electronic state becomes inhomogeneous and band dispersion is obscured. In case of Fe-based superconductors, disord…