269 citations · 776 across the 23 of their papers we have counts for
23 papers
Thickness dependence of diode efficiency in superconducting Fe(Se,Te)/FeTe thin-film heterostructure devices
Kaito Arizono, Kenshin Inamura, Kouta Kondou +4
The superconducting diode effect (SDE) is a nonreciprocal transport phenomenon, in which the superconducting critical current density depends on the polarity of the current. It has…
Thermodynamic stability of twisted domains in AgCrSe thin films grown on lattice-matched YSZ(111) substrate
Haruto Sato, Kota Mihara, Kenshin Inamura +4
Control of structural domains in epitaxial thin films of functional materials is a fundamental technique to utilize their intrinsic physical and chemical properties in solid-state…
Longitudinal spin current absorption in bilayers composed of ferromagnetic and highly-resistive non-magnetic layers
Sosuke Hori, Kohei Ueda, Junichi Shiogai +1
Spin Hall magnetoresistance (SMR) is an intriguing spin-dependent transport phenomenon in bilayers consisting of non-magnetic and magnetic layers. Here, we report on the influence…
Effect of crystallinity on spin-orbit torque in 5 iridium oxide IrO
Tetsuro Morimoto, Kohei Ueda, Junichi Shiogai +3
The 5 transition-metal oxides provide an intriguing platform for generating an efficient spin current due to a unique electronic structure dominated by 5d electrons wit…
Stoichiometry control and epitaxial growth of AgCrSe2 thin films by pulsed-laser deposition
Yusuke Tajima, Kenshin Inamura, Sebun Masaki +5
We report on epitaxial growth in thin-film synthesis of a polar magnetic semiconductor AgCrSe2 on lattice-matched yttria-stabilized zirconia (111) substrate by pulsed-layer deposit…
A scaling relation of vortex-induced rectification effects in a superconducting thin-film heterostructure
Yusuke Kobayashi, Junichi Shiogai, Tsutomu Nojima +1
Supercurrent rectification, nonreciprocal response of superconducting properties sensitive to the polarity of bias and magnetic field, has attracted growing interest as an ideal di…
Engineered substrates for domain control in CrSe thin-film growth: Single-domain formation on lattice-matched YSZ(111) substrate
Yusuke Tajima, Junichi Shiogai, Masayuki Ochi +2
Epitaxial thin-film growth is a versatile and powerful technique for achieving a precise control of composition, stabilizing non-equilibrium phases, tailoring growth orientation, a…
Quantitative imaging of nonlinear spin-wave propagation using diamond quantum sensors
Kensuke Ogawa, Moeta Tsukamoto, Yusuke Mori +7
Spin waves propagating in magnetic materials exhibit nonlinear behavior at large amplitudes due to the competition between excitation and relaxation, providing an attractive platfo…
Suppression of ferromagnetism in rippled LaSrMnO membrane with process-induced strain prepared by epitaxial lift-off technique
Kota Kanda, Ryuji Atsumi, Takamasa Usami +6
Transition metal oxides are a platform for exploring strain-engineered intriguing physical properties and developing spintronic or flexible electronic functionalities owing to stro…
Wideband wide-field imaging of spin-wave propagation using diamond quantum sensors
Kensuke Ogawa, Moeta Tsukamoto, Yusuke Mori +6
Imaging spin-wave propagation in magnetic materials in a wide frequency range is crucial for understanding and applying spin-wave dynamics. Recently, nitrogen-vacancy (NV) centers…
Non-coplanar spin structure in a metallic thin film of triangular lattice antiferromagnet CrSe
Yusuke Tajima, Junichi Shiogai, Kohei Ueda +5
An antiferromagnetic metal with two-dimensional triangular network offers a unique playground of intriguing magneto-transport properties and functionalities stemming from interplay…
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…
Two-dimensionality of metallic surface conduction in Co3Sn2S2 thin films
Junya Ikeda, Kohei Fujiwara, Junichi Shiogai +4
Two-dimensional (2D) surface of the topological materials is an attractive channel for the electrical conduction reflecting the linearly-dispersive electronic bands. By applying a…
Signature of band inversion in the perovskite thin-film alloys BaSnPbO
Junichi Shiogai, Takumaru Chida, Kenichiro Hashimoto +3
Perovskite oxides ABO containing heavy B-site elements are a class of candidate materials to host topological metals with a large spin-orbit interaction. In contrast to the ban…
Magnetic-field-induced topological phase transition in Fe-doped (Bi,Sb)Se heterostructures
Y. Satake, J. Shiogai, G. P. Mazur +9
Three-dimensional topological insulators (3D-TIs) possess a specific topological order of electronic bands, resulting in gapless surface states via bulk-edge correspondence. Exotic…
Ordering phenomena of spin trimers accompanied by large geometrical Hall effect
Shang Gao, Max Hirschberger, Oksana Zaharko +10
The wavefuntion of conduction electrons moving in the background of a non-coplanar spin structure can gain a quantal phase - Berry phase - as if the electrons were moving in a stro…
Fe-Sn nanocrystalline films for flexible magnetic sensors with high thermal stability
Y. Satake, K. Fujiwara, J. Shiogai +2
The interplay of magnetism and spin-orbit coupling on an Fe kagome lattice in Fe3Sn2 crystal produces a unique band structure leading to an order of magnitude larger anomalous Hall…
Fabrication of tetragonal FeSe - FeS alloy films with high sulfur contents by alternate deposition
Kohei Fujiwara, Junichi Shiogai, Atsushi Tsukazaki
We report the synthesis of tetragonal films () by pulsed-laser deposition. To fabricate the tetragonal alloy films with tetragonal Fe…
Quantum Hall effect in a bulk antiferromagnet EuMnBi with magnetically confined two-dimensional Dirac fermions
H. Masuda, H. Sakai, M. Tokunaga +11
For the innovation of spintronic technologies, Dirac materials, in which the low-energy excitation is described as relativistic Dirac fermions, are one of the most promising system…
Electric-field-induced superconductivity in electrochemically-etched ultrathin FeSe films on SrTiO3 and MgO
J. Shiogai, Y. Ito, T. Mitsuhashi +2
Among the recently discovered iron-based superconductors, ultrathin films of FeSe grown on SrTiO3 substrates have uniquely evolved into a high superconducting-transition-temperatur…
Magnetic field-induced insulator-semimetal transition in a pyrochlore Nd2Ir2O7
K. Ueda, J. Fujioka, B. -J. Yang +6
We have investigated magneto-transport properties in a single crystal of pyrochore-type Nd2Ir2O7. The metallic conduction is observed on the antiferromagnetic domain walls of the a…
Shot Noise Induced by Nonequilibrium Spin Accumulation
Tomonori Arakawa, Junichi Shiogai, Mariusz Ciorga +8
When an electric current passes across a potential barrier, the partition process of electrons at the barrier gives rise to the shot noise, reflecting the discrete nature of the el…
Giant enhancement of spin detection sensitivity in (Ga,Mn)As/GaAs Esaki diodes
Junichi Shiogai, Mariusz Ciorga, Martin Utz +6
We investigate the correlation between spin signals measured in three-terminal (3T) geometry by the Hanle effect and the spin accumulation generated in a semiconductor channel in a…