Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Yohei Nagao"'
Autor:
Shigeki Yonezawa, Yuji Muraoka, Yohei Nagao, T. Kato, Jun-ichi Yamaura, Yuichi Kasahara, Koji Hashimoto, Zenji Hiroi, Yasuhiro H. Matsuda, Takasada Shibauchi, Y. Shimono
Publikováno v:
Journal of Physics and Chemistry of Solids. 69:3228-3231
To elucidate the superconducting gap structure and the influence of rattling motion on quasiparticle dynamics in the superconducting state of KOs 2 O 6 , thermal conductivity and microwave surface impedance were measured at low temperatures. The magn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a7f874be4e20a57bbe4bda745811bcc
https://doi.org/10.1016/j.jpcs.2008.06.058
https://doi.org/10.1016/j.jpcs.2008.06.058
Autor:
Norio Ogita, Terutaka Goto, Yuichi Takasu, Ichimin Shirotani, Daisuke Kikuchi, Yoshikazu Ishikawa, Yohei Nagao, Hideyuki Sato, Toshiro Takabatake, Marcos A. Avila, Masayuki Udagawa, Takumi Hasegawa, Zenji Hiroi, Yuichi Nemoto, Chihiro Sekine, Naoya Takeda, Jun-ichi Yamaura, Koichiro Suekuni, Hitoshi Sugawara
Publikováno v:
Journal of the Physical Society of Japan. 77:142-147
Last five years we have mainly investigated phonons in the following cage compounds by Raman scattering: RT 4 X 12 , A 8 Ga 16 Ge 30 , La 3 Pd 20 Ge 6 , RB 6 , KOs 2 O 6 . From this systematic investigation we have clarified the following dynamical p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11e9805906767879507dd048c0d8918a
https://doi.org/10.1143/jpsjs.77sa.142
https://doi.org/10.1143/jpsjs.77sa.142
Autor:
Yuichi Kasahara, Y. Shimono, T. Kato, Yohei Nagao, Zenji Hiroi, Takasada Shibauchi, Koji Hashimoto, Shigeki Yonezawa, Jun-ichi Yamaura, Yuji Muraoka, Yasuhiro H. Matsuda
Publikováno v:
Physica B: Condensed Matter. 403:1068-1070
To elucidate the superconducting gap structure and the influence of rattling motion on quasiparticle dynamics in the superconducting state of KOs 2 O 6 , the thermal conductivity and microwave surface impedance were measured at low temperatures. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87630c7a3404de38a7e8b3c3c964b33f
https://doi.org/10.1016/j.physb.2007.10.090
https://doi.org/10.1016/j.physb.2007.10.090
The superconducting properties of two β-pyrochlore oxides, CsOs 2 O 6 and RbOs 2 O 6 , are studied by thermodynamic and transport measurements using high-quality single crystals. It is shown that the character of superconductivity changes systematic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1acec51f7bd3fbe24140e539f6762ecf
http://arxiv.org/abs/0906.4656
http://arxiv.org/abs/0906.4656
Publikováno v:
Physical Review B. 78
Inelastic neutron scattering on powder samples has been employed to investigate the lattice dynamics of alkali-metal osmates. We have obtained the neutron weighted generalized phonon density-of-states from momentum-transfer averaged coherent inelasti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33f7eff9432751ad06ae654cc34aae54
https://doi.org/10.1103/physrevb.78.104307
https://doi.org/10.1103/physrevb.78.104307
Autor:
Takumi Hasegawa, Norio Ogita, Zenji Hiroi, Yohei Nagao, Yuichi Takasu, Masayuki Udagawa, Jun-ichi Yamaura
Publikováno v:
Physical Review B. 77
$\mathrm{K}{\mathrm{Os}}_{2}{\mathrm{O}}_{6}$ with a $\ensuremath{\beta}$-pyrochlore structure undergoes a superconducting transition at ${T}_{c}=9.6\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, which is the highest temperature among a series of compounds,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc4a82978ec401179ea36e6768900557
https://doi.org/10.1103/physrevb.77.064303
https://doi.org/10.1103/physrevb.77.064303
Autor:
Jun-ichi Yamaura, Yohei Nagao, T. Shibauchi, Ryuji Okazaki, Zenji Hiroi, Yasuhiro H. Matsuda, Marcin Konczykowski, C. J. van der Beek
Publikováno v:
Physical Review Letters. 99
A miniature Hall-sensor array was used to detect magnetic induction locally in the vortex states of the beta-pyrochlore superconductor KOs2O6. Below the first-order transition at Tp~8 K, which is associated with a change in the rattling motion of K i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdd9c6b1b29feec751f0d378454c2c7a
https://doi.org/10.1103/physrevlett.99.257001
https://doi.org/10.1103/physrevlett.99.257001
Autor:
Yuji Muraoka, Hiroki Wadati, A. Fujimori, Zenji Hiroi, Hiroshi Kumigashira, Masaru Takizawa, T. Yoshida, Yohei Nagao, K. Maekawa, M. Oshima
Publikováno v:
Physical Review B. 76
We have measured photoemission spectra of two kinds of $\mathrm{Ti}{\mathrm{O}}_{2}$-capped $\mathrm{V}{\mathrm{O}}_{2}$ thin films, namely, that with a rutile-type $\mathrm{Ti}{\mathrm{O}}_{2}$ capping layer $(r\text{\penalty1000-\hskip0pt}\mathrm{T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a22e1a31948cce8c36655d110bb75ad7
https://doi.org/10.1103/physrevb.76.115121
https://doi.org/10.1103/physrevb.76.115121
Publikováno v:
Physical Review B. 76
Superconducting and normal-state properties of the $\ensuremath{\beta}$-pyrochlore oxide $\mathrm{K}{\mathrm{Os}}_{2}{\mathrm{O}}_{6}$ are studied by means of thermodynamic and transport measurements. It is shown that the superconductivity is of conv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce919d4759bc23d1cb5d4d67be4e2f28
https://doi.org/10.1103/physrevb.76.014523
https://doi.org/10.1103/physrevb.76.014523
Autor:
Yuichi Kasahara, Jun-ichi Yamaura, Koji Hashimoto, Yasuhiro H. Matsuda, T. Kato, Y. Shimono, Takasada Shibauchi, Yohei Nagao, Zenji Hiroi
Publikováno v:
Physical Review Letters. 98
Microwave penetration depth $\ensuremath{\lambda}$ and surface resistance at 27 GHz are measured in high quality crystals of ${\mathrm{KOs}}_{2}{\mathrm{O}}_{6}$. Firm evidence for fully gapped superconductivity is provided from $\ensuremath{\lambda}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0710ae02413d0a1dbb87a59e6de23a3a
https://doi.org/10.1103/physrevlett.98.257004
https://doi.org/10.1103/physrevlett.98.257004