Zobrazeno 1 - 10
of 201
pro vyhledávání: '"KITO, Hijiri"'
Autor:
Pyon, Sunseng, Mori, Haruto, Tamegai, Tsuyoshi, Awaji, Satoshi, Kito, Hijiri, Ishida, Shigeyuki, Yoshida, Yoshiyuki, Kajitani, Hideki, Koizumi, Norikiyo
We report the fabrication of small (Ba,A)Fe2As2 (A: Na, K) coils using 10 m-class long round wires, fabricated by powder-in-tube (PIT) method. Coils are sintered using hot-isostatic-press (HIP) technique after glass-fiber insulations are installed. C
Externí odkaz:
http://arxiv.org/abs/2106.10612
Autor:
Pyon, Sunseng, Miyawaki, Daisuke, Tamegai, Tsuyoshi, Awaji, Satoshi, Kito, Hijiri, Ishida, Shigeyuki, Yoshida, Yoshiyuki
Publikováno v:
Superconductor Science and Technology 33, 065001 (2020)
We fabricated (Ba,Na)Fe2As2 superconducting wires using the powder-in-tube method and hot isostatic pressing. By improving powder synthesis processes compared with previous studies, highly pure raw materials for the wire fabrication were obtained. Th
Externí odkaz:
http://arxiv.org/abs/2004.10423
Autor:
Terashima, Taichi, Kurita, Nobuyuki, Kimata, Motoi, Tomita, Megumi, Tsuchiya, Satoshi, Imai, Motoharu, Sato, Akira, Kihou, Kunihiro, Lee, Chul-Ho, Kito, Hijiri, Eisaki, Hiroshi, Iyo, Akira, Saito, Taku, Fukazawa, Hideto, Kohori, Yoh, Harima, Hisatomo, Uji, Shinya
Publikováno v:
Phys. Rev. B 87, 224512 (2013)
We have completely determined the Fermi surface in KFe$_2$As$_2$ via de Haas-van Alphen (dHvA) measurements. Fundamental frequencies $\epsilon$, $\alpha$, $\zeta$, and $\beta$ are observed in KFe$_2$As$_2$. The first one is attributed to a hole cylin
Externí odkaz:
http://arxiv.org/abs/1304.6469
Autor:
Shimizu, Sunao, Tabata, Shin-ichiro, Iwai, Shiho, Mukuda, Hidekazu, Kitaoka, Yoshio, Shirage, Parasharam M., Kito, Hijiri, Iyo, Akira
Publikováno v:
Physical Review B 85, 024528 (2012) [selected as Editors' Suggestion]
We report systematic Cu- and F-NMR measurements of five-layered high-Tc cuprates Ba2Ca4Cu5O10(F,O)2. It is revealed that antiferromagnetism (AFM) uniformly coexists with superconductivity (SC) in underdoped regions, and that the critical hole density
Externí odkaz:
http://arxiv.org/abs/1201.1430
Autor:
Ohishi, Kazuki, Ishii, Yasuyuki, Fukazawa, Hedeto, Saito, Taku, Watanabe, Isao, Kohori, Yoh, Suzuki, Takao, Kihou, Kunihiro, Lee, Chul-Ho, Miyazawa, Kiichi, Kito, Hijiri, Iyo, Akira, Eisaki, Hiroshi
The anisotropy and temperature dependence of the magnetic field penetration depth in the iron-based superconductor KFe$_2$As$_2$ have been measured down to 20 mK by means of muon spin rotation. We have observed that the flux-line lattice forms triang
Externí odkaz:
http://arxiv.org/abs/1112.6078
Autor:
Kimata, Motoi, Terashima, Taichi, Kurita, Nobuyuki, Satsukawa, Hidetaka, Harada, Atsushi, Kodama, Kouta, Takehana, Kanji, Imanaka, Yasutaka, Takamasu, Tadashi, Kihou, Kunihiro, Lee, Chul-Ho, Kito, Hijiri, Eisaki, Hiroshi, Iyo, Akira, Fukazawa, Hideto, Kohori, Yoh, Harima, Hisatomo, Uji, Shinya
Publikováno v:
Phys. Rev. Lett. 107, 166402 (2011)
Cyclotron resonance (CR) measurements for the Fe-based superconductor KFe$_2$As$_2$ are performed. One signal for CR is observed, and is attributed to the two-dimensional $\alpha$ Fermi surface at the $\Gamma$ point. We found a large discrepancy in t
Externí odkaz:
http://arxiv.org/abs/1111.1884
Autor:
Shimizu, Sunao, Tabata, Shin-ichiro, Mukuda, Hidekazu, Kitaoka, Yoshio, Shirage, Parasharam M., Kito, Hijiri, Iyo, Akira
Publikováno v:
Phys. Rev. B 83, 214514 (2011) [7 pages]. [selected as Editors' Suggestion]
We report on the phase diagram of antiferromagnetism (AFM) and superconductivity (SC) in three-layered Ba_2Ca_2Cu_3O_6(F,O)_2 by means of Cu-NMR measurements. It is demonstrated that AFM and SC uniformly coexist in three-layered compounds as well as
Externí odkaz:
http://arxiv.org/abs/1105.5168
Autor:
Shimizu, Sunao, Iwai, Shiho, Tabata, Shin-ichiro, Mukuda, Hidekazu, Kitaoka, Yoshio, Shirage, Parasharam M., Kito, Hijiri, Iyo, Akira
Publikováno v:
Phys. Rev. B 83, 144523 (2011) [6 pages]
We report that planar CuO_2 hole densities in high-T_c cuprates are consistently determined by the Cu-NMR Knight shift. In single- and bi-layered cuprates, it is demonstrated that the spin part of the Knight shift K_s(300 K) at room temperature monot
Externí odkaz:
http://arxiv.org/abs/1103.3407
Autor:
Shirage, Parasharam M., Miyazawa, Kiichi, Kihou, Kunihiro, Lee, Chul-Ho, Kito, Hijiri, Tokiwa, Kazuyasu, Tanaka, Yasumoto, Eisaki, Hiroshi, Iyo, Akira
Here we demonstrate the technique to stabilize the ErFeAsO-based superconductor with the smallest lattice constants in LnFeAsO1-y (Ln = lanthanide) series using hydrogen doping method. Polycrystalline samples were synthesized by heating pellets with
Externí odkaz:
http://arxiv.org/abs/1011.5022
Autor:
Shirage, Parasharam M., Kihou, Kunihiro, Lee, Chul-Ho, Kito, Hijiri, Eisaki, Hiroshi, Iyo, Akira
Publikováno v:
Appl. Phys. Lett. 97, 172506 (2010); http://link.aip.org/link/?APL/97/172506
We have successfully synthesized (Ca4Al2O6-y)(Fe2Pn2) (Pn = As and P) (Al-42622(Pn)) using high-pressure synthesis technique. Al-42622(Pn) exhibit superconductivity for both Pn = As and P with the transition temperatures of 28.3 K and 17.1 K, respect
Externí odkaz:
http://arxiv.org/abs/1008.2586