18 citations · 43 across the 13 of their papers we have counts for
14 papers
Phase control of magnon-phonon coupling via magnetic field
Yasuhiro Todaka, Motoki Asano, Isamu Yasuda +3
We study the phase of the coupling between magnons and surface acoustic wave (SAW) phonons in magnetic thin films. The coupling constant changes from a real to a complex number as…
Tellurium Metasurface Beam Splitter with Pulse Laser-Controlled Anisotropy
Takuto Hiraoka, Mizuho Matoba, Yuta Kobayashi +5
Laser-programmable optical anisotropy offers a new route to developing reconfigurable metasurfaces without conventional nanofabrication processes. Here, we demonstrate a lithograph…
Photo-thermal origin of pulse laser induced orientation of crystallographic c axis in Tellurium thin films
Arata Mitsuzuka, Yuta Kobayashi, Takuto Hiraoka +2
Recent studies have shown that the orientation of crystallographic c axis of Tellurium thin films can be controlled using picosecond long laser pulses. This method provides spatial…
Polar and quadratic magneto-optical Kerr effects in nonmagnetic/ferromagnet bilayers for spin-orbit torque measurements
Yukihiro Marui, Masashi Kawaguchi, Kohji Nakamura +1
Recent studies have revealed that spin Hall magnetoresistance (SMR) contributes to both the anomalous and planar Hall resistances in nonmagnetic metal (NM)/ferromagnetic metal (FM)…
Current induced magneto-optical Kerr effect as a probe of Dirac carriers in BiSb alloy
Ryota Miyazaki, Shunzhen Wang, Guanxiong Qu +4
We study the current-induced magneto-optical Kerr effect (MOKE) in BiSb semi-metalic alloys. The MOKE signal is found to be the largest in pure Bi (), exceeding th…
Comments on the formula to extract current-induced torques from the harmonic Hall voltage measurements
Yong-Chang Lau, Yukihiro Marui, Zhendong Chi +2
We examine the formulas commonly used to estimate current-induced spin-orbit torques from harmonic Hall voltage measurements. In particular, we focus on the factor of two discrepan…
Light-programmable reorientation of the crystallographic c-axis of Tellurium thin films
Yuta Kobayashi, Arata Mitsuzuka, Haruo Kondo +5
Tellurium (Te), a two-dimensional material with pronounced structural anisotropy, exhibits exceptional electrical and optical properties that are highly sensitive to its crystallog…
Significant electron-magnon scattering in layered ferromagnet CrTe
Yujun Wang, Shunzhen Wang, Masashi Kawaguchi +7
A layered ferromagnet CrTe is attracting growing interest because of its unique electronic and magnetic properties. Studies have shown that it exhibits sizable anomalous Ha…
Model calculations of the strains associated with surface acoustic waves
Takuya Kawada, Masashi Kawaguchi, Hiroki Matsumoto +1
Magnon-phonon coupling has garnered increasing interest in condensed matter physics due to its fertile physics and potential applications in devices with novel functionalities. Sur…
Spin current generation by acousto-electric evanescent wave
Takuya Kawada, Masashi Kawaguchi, Kei Yamamoto +5
We experimentally demonstrate that a spin current can be induced by the acousto-electric evanescent wave, an electric field associated with surface acoustic waves (SAWs) that decay…
Electromagnetic evanescent field associated with surface acoustic wave: Response of metallic thin films
Takuya Kawada, Kei Yamamoto, Masashi Kawaguchi +5
Surface acoustic waves (SAWs), coherent vibrational modes localized at solid surfaces, have been employed to manipulate and detect electronic and magnetic states in condensed-matte…
Acoustoelectric non-local spin wave power detector for studying magnon-phonon coupling
Hiroki Matsumoto, Yasuhiro Todaka, Takuya Kawada +2
We have developed a simple detection scheme to study spin waves excited by surface acoustic wave (SAW) in ferromagnetic thin films. Metallic antennas made of Ta and a ferromagnetic…
Magnon-phonon coupling of synthetic antiferromagnets in a surface acoustic wave cavity resonator
Hiroki Matsumoto, Isamu Yasuda, Motoki Asano +4
We use a surface acoustic wave (SAW) cavity resonator to study the coupling of acoustic magnons in a synthetic antiferromagnet (SAF) and the phonons carried by SAWs. The SAF is com…
Spin and orbital Hall currents detected via current induced magneto-optical Kerr effect in V and Pt
Y. Marui, M. Kawaguchi, S. Sumi +3
We have studied the film thickness dependence of the current-induced magneto-optical Kerr effect in Pt and V thin films. The Kerr signal for Pt shows little dependence on the thick…