Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Kawaguchi, Masashi"'
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 element are placed along the SAW propagation path. The SAW excites sp
Externí odkaz:
http://arxiv.org/abs/2403.12745
Autor:
Matsumoto, Hiroki, Yasuda, Isamu, Asano, Motoki, Kawada, Takuya, Kawaguchi, Masashi, Hatanaka, Daiki, Hayashi, Masamitsu
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 composed of a CoFeB/Ru/CoFeB trilayer and the scattering matrix of the SA
Externí odkaz:
http://arxiv.org/abs/2311.05275
Publikováno v:
Appl. Phys. Lett. 123, 092403 (2023)
We have developed an approach to determine the magnetoelastic coupling constant of magnetic layers in thin film heterostructures. The film is formed on a piezoelectric substrate between two interdigital transducers (IDT), a platform often used to con
Externí odkaz:
http://arxiv.org/abs/2310.17215
Publikováno v:
Appl. Phys. Express 16, 053005 (2023)
We studied helicity resolved Raman scattering in PtSe$_2$ flakes with different thicknesses. The peak amplitude of helicity-switched Raman scattering is significantly larger than that of helicity-conserved scattering for the in-plane $E_{g}$ mode, co
Externí odkaz:
http://arxiv.org/abs/2310.17206
Autor:
Hirai, Yoshua, Yoshikawa, Naotaka, Kawaguchi, Masashi, Hayashi, Masamitsu, Okumura, Shun, Oka, Takashi, Shimano, Ryo
Recent advancement in laser technology has opened the path toward the manipulation of functionalities in quantum materials by intense coherent light. Here, we study three-dimensional (3D) Dirac electrons driven by circularly polarized light (CPL), wh
Externí odkaz:
http://arxiv.org/abs/2301.06072
Autor:
Chi, Zhendong, Qu, Guanxiong, Lau, Yong-Chang, Kawaguchi, Masashi, Fujimoto, Junji, Takanashi, Koki, Ogata, Masao, Hayashi, Masamitsu
Publikováno v:
Phys. Rev. B 105, 214419 (2022)
The spin Hall effect of a Dirac Hamiltonian system is studied using semiclassical analyses and the Kubo formula. In this system, the spin Hall conductivity is dependent on the definition of spin current. All components of the spin Hall conductivity v
Externí odkaz:
http://arxiv.org/abs/2205.11669
Publikováno v:
Appl. Phys. Express 15, 063003 (2022)
We have studied the transmission of surface acoustic waves (SAWs) in ferromagnetic/non-magnetic/ferromagnetic tryilayers. The SAW scattering matrix is studied for devices with various non-magnetic spacer thickness, which defines the strength of the i
Externí odkaz:
http://arxiv.org/abs/2203.16192
Autor:
Chi, Zhendong, Lau, Yong-Chang, Zhang, Vanessa Li, Shibata, Goro, Sakamoto, Shoya, Nonaka, Yosuke, Ikeda, Keisuke, Wan, Yuxuan, Suzuki, Masahiro, Kawaguchi, Masashi, Suzuki-Sakamaki, Masako, Amemiya, Kenta, Kawamura, Naomi, Mizumaki, Masaichiro, Suzuki, Motohiro, Yang, Hyunsoo, Hayashi, Masamitsu, Fujimori, Atsushi
We have studied the Co layer thickness dependences of magnetocrystalline anisotropy (MCA), Dzyaloshinskii-Moriya interaction (DMI), and orbital moment anisotropy (OMA) in W/Co/Pt trilayers, in order to clarify their correlations with each other. We f
Externí odkaz:
http://arxiv.org/abs/2102.01283
Autor:
Kawaguchi, Masashi, Tanabe, Kenji, Yamada, Keisuke, Sawa, Takuya, Hasegawa, Shun, Hayashi, Masamitsu, Nakatani, Yoshinobu
Publikováno v:
npj Computational Materials 7, 20 (2021)
Machine learning is applied to a large number of modern devices that are essential in building energy efficient smart society. Audio and face recognition are among the most well-known technologies that make use of such artificial intelligence. In mat
Externí odkaz:
http://arxiv.org/abs/2102.00173