468 citations · 1.1k across the 16 of their papers we have counts for
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Exciton-magnon splitting in van der Waals antiferromagnet MnPS unveiled by second-harmonic generation
Ziqian Wang, Xiao-Xiao Zhang, Yuki Shiomi +4
Ultrafast and coherent generation of magnons is of great significance for high-speed antiferromagnetic spintronics. One possible route is by exciton-magnon pairwise optical excitat…
Photovoltaic effect by soft phonon excitation
Yoshihiro Okamura, Takahiro Morimoto, Naoki Ogawa +7
Photodetection is an indispensable function of optoelectronic devices in modern communication and sensing systems. Contrary to the near-infrared/visible regions, the fast and sensi…
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…
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…
Photo-creating supercooled spiral-spin states in a multiferroic manganite
Y. M. Sheu, N. Ogawa, Y. Kaneko +1
We demonstrate that dynamics of the ab-spiral-spin order in a magnetoelectric multiferroic Eu0.55Y0.45MnO3 can be unambiguously probed through optical second harmonic signals, gene…
Polar Antiferromagnets Produced with Orbital-Order
Naoki Ogawa, Yasushi Ogimoto, Yoshiaki Ida +3
Polar magnetic states are realized in pseudocubic manganite thin films fabricated on high-index substrates, in which a Jahn-Teller (JT) distortion remains an active variable. Sever…
Nonlinear Optical Response of SrTiO3/LaAlO3 Superlattices
N. Ogawa, K. Miyano, M. Hosoda +4
The electronic symmetry of the SrTiO3/LaAlO3 interface was investigated by optical second harmonic generation, using superlattices with varying periodicity to study the evolution o…
Relative contributions of lattice distortion and orbital ordering to resonant x-ray scattering in manganites
M. Nakamura, M. Izumi, N. Ogawa +3
We investigated the origin of the energy splitting observed in the resonant x-ray scattering (RXS) in manganites. Using thin film samples with controlled lattice parameters and orb…