468 citations · 2.2k across the 26 of their papers we have counts for
13 papers · 1 filter
Impact of epitaxial strain relaxation on ferromagnetism in a freestanding La2/3Sr1/3MnO3 membrane
Ryuji Atsumi, Junichi Shiogai, Takumi Yamazaki +3
Manganite perovskites host emerging physical properties of strongly-correlated electrons with charge, spin, and lattice degrees of freedom. Using epitaxial lift-off technique, we r…
Electric-field control of anomalous and topological Hall effects in oxide bilayer thin films
Yuki Ohuchi, Jobu Matsuno, Naoki Ogawa +4
One of the key technologies in spintronics is to tame spin-orbit coupling (SOC) that links spin and motion of electrons, giving rise to intriguing magneto-transport properties in i…
Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates
A. Yamasaki, H. Fujiwara, S. Tachibana +19
In this study, we systematically investigate 3D momentum()-resolved electronic structures of Ruddlesden-Popper-type iridium oxides SrIrO using soft-x-…
Interface-driven topological Hall effect in SrRuO-SrIrO bilayer
J. Matsuno, N. Ogawa, K. Yasuda +5
Electron transport coupled with magnetism has attracted attention over the years as exemplified in anomalous Hall effect due to a Berry phase in momentum space. Another type of unc…
Fabrication of (111)-oriented Ca0.5Sr0.5IrO3/SrTiO3 superlattices; a designed playground for honeycomb physics
Daigorou Hirai, Jobu Matsuno, Hidenori Takagi
We report the fabrication of (111)-oriented superlattice structures with alternating 2m-layers (m = 1, 2, and 3) of Ca0.5Sr0.5IrO3 perovskite and two layers of SrTiO3 perovskite on…
Engineering spin-orbital magnetic insulator by tailoring superlattices
Jobu Matsuno, Kota Ihara, Shugen Yamamura +5
Novel interplay of spin-orbit coupling and electron correlations in complex Ir oxides recently emerged as a new paradigm for correlated electron physics. Because of a large spin-or…
Two-dimensional Heisenberg behavior of Jeff = 1/2 isospins in the paramagnetic state of spin-orbital Mott insulator Sr2IrO4
S. Fujiyama, H. Ohsumi, T. Komesu +5
Dynamical correlations of Jeff = 1/2 isospins in the paramagnetic state of spin-orbital Mott insu- lator Sr2IrO4 was revealed by resonant magnetic x-ray diffuse scattering. We foun…
Epitaxially stabilized iridium spinel oxide without cations in the tetrahedral site
Hiromichi Kuriyama, Jobu Matsuno, Seiji Niitaka +7
Single-crystalline thin film of an iridium dioxide polymorph Ir2O4 has been fabricated by the pulsed laser deposition of LixIr2O4 precursor and the subsequent Li-deintercalation us…
Anomalous metallic state in the vicinity of Metal to Valence Bond Solid insulator transition in LiVS2
N. Katayama, M. Uchida, D. Hashizume +9
We investigate LiVS2 and LiVSe2 with a triangular lattice as itinerant analogues of LiVO2, known for the formation of valence bond solid (VBS) state out of S = 1 frustrated magnet.…
Sr(Ba)VO under pressure -- an orbital switch and potential superconductor
R. Arita, A. Yamasaki, K. Held +2
We study Sr(Ba)VO under high pressure by means of the local density approximation + dynamical mean field theory method. While SrVO is a 1/6-filling three-band s…
Different routes to charge disproportionation in perovskites-type Fe oxides
J. Matsuno, T. Mizokawa, A. Fujimori +3
Iron perovskites CaFeO_3 and La_{0.33}Sr_{0.67}FeO_3 show charge disproportionation, resulting in charge-ordered states with Fe^{3+}:Fe^{5+} =1:1 and =2:1, respectively. We have ma…
Chemical potential shift in La(1-x)Sr(x)MnO(3): Photoemission test of the phase separation scenario
J. Matsuno, A. Fujimori, Y. Takeda +1
We have studied the chemical potential shift in La(1-x)Sr(x)MnO(3) as a function of doped hole concentration by core-level x-ray photoemission. The shift is monotonous, which means…
Electronic structure of spinel-type LiV_2O_4
J. Matsuno, A. Fujimori, L. F. Mattheiss
The band structure of the cubic spinel compound LiV_2O_4, which has been reported recently to show heavy Fermion behavior, has been calculated within the local-density approximatio…