Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Sato, Noriaki K"'
Autor:
Watanabe, Hiroshi, Takeno, Yusuke, Negoro, Yusuke, Ikeda, Ryohei, Shibata, Yuria, Chen, Yitong, Nakamura, Takuto, Yamagami, Kohei, Hirata, Yasuyuki, Zhang, Yujun, Takahashi, Ryunosuke, Wadati, Hiroki, Tamasaku, Kenji, Imura, Keiichiro, Suzuki, Hiroyuki S., Sato, Noriaki K., Kimura, Shin-ichi
To investigate the role of the excitons for the origin of the pressure-induced phase transition (BGT) from the black-colored insulator (BI) to the golden-yellow-colored metal (GM) of samarium monosulfide (SmS), optical reflectivity, Sm $3d$ X-ray abs
Externí odkaz:
http://arxiv.org/abs/2410.00674
Autor:
Shiino, Takayuki, Labib, Farid, Hirano, Yuma, Deguchi, Kazuhiko, Imura, Keiichiro, Sugimoto, Takanori, Ohhashi, Satoshi, Fujita, Nobuhisa, Tsai, An-Pang, Sato, Noriaki K.
Quasicrystal approximant (CexY1-x)Cd6 (0 < x < 1) forms a network of corner-sharing octahedra. We report that (Ce0.8Y0.2)Cd6 exhibits an anomalous magnetic transition which can be classified neither into the conventional static magnetic ordering nor
Externí odkaz:
http://arxiv.org/abs/2404.16402
Autor:
Imura, Keiichiro, Yoneyama, Yuki, Ando, Hideyuki, Kabeya, Noriyuki, Yamaoka, Hitoshi, Hiraoka, Nozomu, Ishii, Hirofumi, Ishimasa, Tsutomu, Sato, Noriaki K.
Publikováno v:
J. Phys. Soc. Jpn., Vol.92, No.9, (2023), Article ID: 093701
We have synthesized new Tsai-type Yb-based intermediate-valence approximant crystals (ACs) with different degree of approximation to quasicrystal, Zn--Au--Yb 1/1 and 2/1 AC, and studied the external pressure effect on their Yb mean-valence $\nu$. Whe
Externí odkaz:
http://arxiv.org/abs/2305.16853
Autor:
Kimura, Shin-ichi, Watanabe, Hiroshi, Tatsukawa, Shingo, Nakamura, Takuto, Imura, Keiichiro, Suzuki, Hiroyuki S., Sato, Noriaki K.
Publikováno v:
J. Phys. Soc. Jpn. 93, 013701 (2024)
A strongly-correlated insulator, samarium mono-sulfide (SmS), presents not only the pressure-induced insulator-to-metal transition (IMT) with the color change from black to golden-yellow but also current-induced IMT (CIMT) with negative resistance. T
Externí odkaz:
http://arxiv.org/abs/2302.12998
Autor:
Chen, Yitong, Nakamura, Takuto, Watanabe, Hiroshi, Suzuki, Takeshi, Ren, Qianhui, Liu, Kecheng, Zhong, Yigui, Kanai, Teruto, Itatani, Jiro, Shin, Shik, Okazaki, Kozo, Imura, Keiichiro, Suzuki, Hiroyuki S., Sato, Noriaki K., Kimura, Shin-ichi
The photo-induced band structure variation of a rare-earth-based semiconductor, samarium monosulfide (SmS), was investigated using high-harmonic-generation laser-based time-resolved photoelectron spectroscopy. A nonlinear photo-induced band shift of
Externí odkaz:
http://arxiv.org/abs/2212.00983
Autor:
Nakamura, Takuto, Nakaya, Toru, Ohtsubo, Yoshiyuki, Sugihara, Hiroki, Tanaka, Kiyohisa, Yukawa, Ryu, Kitamura, Miho, Kumigashira, Hiroshi, Imura, Keiichiro, Suzuki, Hiroyuki S., Sato, Noriaki K., Kimura, Shin-ichi
The electronic structure changes of SmS surfaces under potassium (K) doping are elucidated using synchrotron-based core-level photoelectron spectroscopy and angle-resolved photoelectron spectroscopy (ARPES). The Sm core-level and ARPES spectra indica
Externí odkaz:
http://arxiv.org/abs/2205.15522
Autor:
Manago, Masahiro, Kitagawa, Shunsaku, Ishida, Kenji, Deguchi, Kazuhiko, Sato, Noriaki K., Yamamura, Tomoo
Publikováno v:
Journal of the Physical Society of Japan 88, 113704 (2019)
The phase separation of the ferromagnetic (FM) and paramagnetic (PM) phases in the superconducting (SC) state of UCoGe at the FM critical region was investigated using $^{59}$Co nuclear quadrupole resonance (NQR) technique by taking advantage of its
Externí odkaz:
http://arxiv.org/abs/1910.10396
Autor:
Manago, Masahiro, Kitagawa, Shunsaku, Ishida, Kenji, Deguchi, Kazuhiko, Sato, Noriaki K., Yamamura, Tomoo
Publikováno v:
Physical Review B 100, 035203 (2019)
A $^{59}$Co nuclear magnetic resonance (NMR) measurement was performed on the single-crystalline ferromagnetic (FM) superconductor UCoGe under a pressure of 1.09 GPa, where the FM state is suppressed and superconductivity occurs in the paramagnetic (
Externí odkaz:
http://arxiv.org/abs/1907.06177
Autor:
Manago, Masahiro, Kitagawa, Shunsaku, Ishida, Kenji, Deguchi, Kazuhiko, Sato, Noriaki K., Yamamura, Tomoo
Publikováno v:
Physical Review B 99, 020506(R) (2019)
A $^{59}$Co nuclear quadrupole resonance (NQR) was performed on a single-crystalline ferromagnetic (FM) superconductor UCoGe under pressure. The FM phase vanished at a critical pressure $P_c$, and the NQR spectrum just below $P_c$ showed phase separa
Externí odkaz:
http://arxiv.org/abs/1901.08699
The hexagonal ZrNiAl-type (space group: P-62m) and the tetragonal Mo2FeB2-type (space group: P4/mbm) structures, which are frequently formed in the same Yb-based alloys and exhibit physical properties related to valence-fluctuation, can be regarded a
Externí odkaz:
http://arxiv.org/abs/1804.05505