Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Hideki Hirori"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract The critical current in a superconductor (SC) determines the performance of many SC devices, including SC diodes which have attracted recent attention. Hitherto, studies of SC diodes are limited in the DC-field measurements, and their perfor
Externí odkaz:
https://doaj.org/article/1de0daacd46d4e3889cc418bab5e8afb
Autor:
Kotaro Nakagawa, Wenwen Mao, Shunsuke A. Sato, Hiroki Ago, Angel Rubio, Yoshihiko Kanemitsu, Hideki Hirori
Publikováno v:
APL Photonics, Vol 9, Iss 7, Pp 076107-076107-8 (2024)
We studied high-order harmonic generation (HHG) in graphene driven by either linearly or elliptically polarized mid-infrared (MIR) light, and we additionally applied terahertz (THz) pulses to modulate the electron distribution in graphene. The high-h
Externí odkaz:
https://doaj.org/article/12ab6807cd79417c85b07f8a17b3d960
Autor:
Zhenya Zhang, Fumiya Sekiguchi, Takahiro Moriyama, Shunsuke C. Furuya, Masahiro Sato, Takuya Satoh, Yu Mukai, Koichiro Tanaka, Takafumi Yamamoto, Hiroshi Kageyama, Yoshihiko Kanemitsu, Hideki Hirori
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
The authors studied HoFeO3 crystal using multicycle THz magnetic pulses enhanced strongly by spiral-shaped microstructure. The observed Faraday ellipticity demonstrates second- and third-order harmonics of the magnetization oscillation and an asymmet
Externí odkaz:
https://doaj.org/article/9afce982e8b64b9c8b22544bc29a72a2
Autor:
Kei Maruyama, Zhenya Zhang, Miharu Takumi, Takuya Satoh, Makoto Nakajima, Yoshihiko Kanemitsu, Hideki Hirori
Publikováno v:
Applied Physics Express, Vol 17, Iss 2, p 022004 (2024)
We study the terahertz (THz) magnetic field pulse enhanced by a spiral-shaped antenna resonator (SAR). We deposit the SAR on the surface of a terbium-gallium-garnet crystal, which has a large Verdet constant, and measure the Faraday rotation angle fo
Externí odkaz:
https://doaj.org/article/c9e53712da8a4c2fa17b1593137d3ff0
Autor:
Go Yumoto, Hideki Hirori, Fumiya Sekiguchi, Ryota Sato, Masaki Saruyama, Toshiharu Teranishi, Yoshihiko Kanemitsu
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Here, Yumoto et al. demonstrate that for a halide perovskite with large spin-orbit splitting the optical Stark effect can give way to a three level Autler-Townes effect in the near-infrared region. The multiband nature of the effect potentially allow
Externí odkaz:
https://doaj.org/article/5b9d8925cf1a4928b8ccb18e4ce8119f
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
High harmonic generation from solids is an interesting and growing field of research. Here the authors explore HHG from GaSe sample driven by two-color fields and find that controlling electron trajectories in a band structure enable to modify the an
Externí odkaz:
https://doaj.org/article/21d3a961d8504631955e3a1f1fef88e0
Autor:
Zhenya Zhang, Hideki Hirori, Fumiya Sekiguchi, Ai Shimazaki, Yasuko Iwasaki, Tomoya Nakamura, Atsushi Wakamiya, Yoshihiko Kanemitsu
Publikováno v:
Physical Review Research, Vol 3, Iss 3, p L032021 (2021)
Ultrastrong coupling (USC) between phonons and vacuum photons can result in fascinating quantum phenomena, though it is difficult to achieve due to the small dipole moments of phonons in solids. Here, we investigate the vacuum Rabi splitting by coupl
Externí odkaz:
https://doaj.org/article/c0896be17a364ca5b042c7475723c621
Autor:
Hideki Hirori, Peiyu Xia, Yasushi Shinohara, Tomohito Otobe, Yasuyuki Sanari, Hirokazu Tahara, Nobuhisa Ishii, Jiro Itatani, Kenichi L. Ishikawa, Tomoko Aharen, Masashi Ozaki, Atsushi Wakamiya, Yoshihiko Kanemitsu
Publikováno v:
APL Materials, Vol 7, Iss 4, Pp 041107-041107-4 (2019)
The generation of high-order harmonics from hybrid organic–inorganic perovskites (HOIPs) is demonstrated by the excitation with a strong mid-infrared laser pulse. We prepare three types of HOIP polycrystalline thin film samples by solution processe
Externí odkaz:
https://doaj.org/article/175dc4c1dfc947ff8dd343f06a27ddc2
Publikováno v:
New Journal of Physics, Vol 19, Iss 12, p 123018 (2017)
We investigate the dynamics of the impact ionization (IMI) process in silicon in extremely high fields in the MV/cm range and at low initial carrier concentrations; conditions that are not accessible with conventional transport measurements. We use u
Externí odkaz:
https://doaj.org/article/5943df18c2984913b9dc9186b144b3d5
Autor:
Kenichi Cho, Hirokazu Tahara, Takumi Yamada, Hidekatsu Suzuura, Terumasa Tadano, Ryota Sato, Masaki Saruyama, Hideki Hirori, Toshiharu Teranishi, Yoshihiko Kanemitsu
Publikováno v:
Nano Letters. 22:7674-7681