Zobrazeno 1 - 10
of 3 981
pro vyhledávání: '"Miyazawa K"'
Autor:
Iono, D., Hatsukade, B., Kohno, K., Kawabe, R., Ikarashi, S., Ichikawa, K., Kodama, T., Motohara, K., Nakajima, T., Nakanishi, K., Ohta, K., Ota, K., Saito, T., Suzuki, K., Tadaki, K., Tamura, Y., Ueda, J., Umehata, H., Yabe, K., Yoshida, T., Yuma, S., Kuno, N., Takano, S., Iwashita, H., Handa, K., Higuchi, A., Hirota, A., Ishikawa, S., Kimura, K., Maekawa, J., Mikoshiba, H., Miyazawa, C., Miyazawa, K., Muraoka, K., Ogawa, H., Onodera, S., Saito, Y., Sakai, T., Takahashi, S., Yun, M. S.
We present initial results from the CO survey toward high redshift galaxies using the Nobeyama 45m telescope. Using the new wide bandwidth spectrometer equipped with a two-beam SIS receiver, we have robust new detections of three high redshift (z=1.6
Externí odkaz:
http://arxiv.org/abs/1206.3840
Autor:
Yamashita, H., Mukuda, H., Yashima, M., Furukawa, S., Kitaoka, Y., Miyazawa, K., Shirage, P. M., Eisaki, H., Iyo, A.
Publikováno v:
J. Phys. Soc. Jpn. 79, 103703 /1-4 (2010)
We report our extensive 57Fe-, 75As-, 139La-, and 1H-NMR studies of La_{0.8}Y_{0.2}FeAsO_{1-y} (La_{0.8}Y_{0.2}1111) and LaFeAsO_{1-y}H_{x}(La1111H), where doping yttrium (Y) and hydrogen (H) into optimally doped LaFeAsO_{1-y} (La1111(OPT)) increases
Externí odkaz:
http://arxiv.org/abs/1007.2514
Autor:
Ishida, S., Nakajima, M., Tomioka, Y., Ito, T., Miyazawa, K., Kito, H., Lee, C. H., Ishikado, M., Shamoto, S., Iyo, A., Eisaki, H., Kojima, K. M., Uchida, S.
Publikováno v:
Phys. Rev. B 81, 094515 (2010)
Characteristic normal-state charge transport is found in the oxygen-deficient iron-arsenides LnFeAsO1-y (Ln: La and Nd) with the highest Tc's among known Fe-based superconductors. The effect of "doping" in this system is mainly on the carrier scatter
Externí odkaz:
http://arxiv.org/abs/1003.5039
Autor:
Miyazawa, K., Ishida, S., Kihou, K., Shirage, P. M., Nakajima, M., Lee, C. H., Kito, H., Tomioka, Y., Ito, T., Eisaki, H., Yamashita, H., Mukuda, H., Tokiwa, K., Uchida, S., Iyo, A.
We report that the incorporation of hydroxide ions (OH)- significantly enhances the superconducting transition temperature (Tc) in the LnFeAsO-based superconductors (Ln1111: Ln = La, Ce and Pr). For La1111, Tc of the (OH)- incorporated sample synthes
Externí odkaz:
http://arxiv.org/abs/1001.5145
Autor:
Yashima, M., Nishimura, H., Mukuda, H., Kitaoka, Y., Miyazawa, K., Shirage, P. M., Kiho, K., Kito, H., Eisaki, H., Iyo, A.
Publikováno v:
J. Phys. Soc. Jpn. 78, 103702 (2009)
We present $^{57}$Fe-NMR measurements of the novel normal and superconducting-state characteristics of the iron-arsenide superconductor Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$ ($T_c$ = 38 K). In the normal state, the measured Knight shift and nuclear spin-la
Externí odkaz:
http://arxiv.org/abs/0905.1896
Autor:
Mukuda, H., Terasaki, N., Tamura, N., Kinouchi, H., Yashima, M., Kitaoka, Y., Miyazawa, K., Shirage, P. M., Suzuki, S., Miyasaka, S., Tajima, S., Kito, H., Eisaki, H., Iyo, A.
Publikováno v:
J. Phys. Soc. Jpn. 78 (2009) 084717/1-7
We report systematic 57Fe-NMR and 75As-NMR/NQR studies on an underdoped sample (T_c=20 K), an optimally doped sample (T_c=28 K), and an overdoped sample (T_c=22 K) of oxygen-deficient iron (Fe)-based oxypnictide superconductor LaFeAsO_{1-y}$. A micro
Externí odkaz:
http://arxiv.org/abs/0904.4301
Autor:
Fukazawa, H., Yamazaki, T., Kondo, K., Kohori, Y., Takeshita, N., Shirage, P. M., Kihou, K, Miyazawa, K., Kito, H., Eisaki, H., Iyo, A.
Publikováno v:
J. Phys. Soc. Jpn. Vol.78 (2009) p033704.
We report the 75As nuclear magnetic resonance (NMR) measurement of the hole-doped superconductor Ba1-xKxFe2As2 with different lattice parameters and different superconducting volume fractions (Tc = 38K). 75As-NMR spectra revealed that the magneticall
Externí odkaz:
http://arxiv.org/abs/0901.0177
Autor:
Terasaki, N., Mukuda, H., Yashima, M., Kitaoka, Y., Miyazawa, K., Shirage, P. M., Kito, H., Eisaki, H., Iyo, A.
Publikováno v:
J. Phys. Soc. Jpn. 78, 013701/1-4 (2009)
We report $^{57}$Fe-NMR studies on the oxygen-deficient iron (Fe)-based oxypnictide superconductor LaFeAsO$_{0.7}$ ($T_{c}=$ 28 K) enriched by $^{57}$Fe isotope. In the superconducting state, the spin component of $^{57}$Fe-Knight shift $^{57}K$ decr
Externí odkaz:
http://arxiv.org/abs/0809.5155
Autor:
Fukazawa, H., Takeshita, N., Yamazaki, T., Kondo, K., Hirayama, K., Kohori, Y., Miyazawa, K., Kito, H., Eisaki, H., Iyo, A.
Publikováno v:
J. Phys. Soc. Jpn. Vol.77 (2008) p105004.
We performed the dc resistivity and the ZF 75As-NMR measurement of BaFe2As2 under high pressure. The T-P phase diagram of BaFe2As2 determined from resistivity anomalies and the ZF 75As-NMR clearly revealed that the SDW anomaly is quite robust against
Externí odkaz:
http://arxiv.org/abs/0808.0718
Autor:
Fukazawa, H., Hirayama, K., Kondo, K., Yamazaki, T., Kohori, Y., Takeshita, N., Miyazawa, K., Kito, H., Eisaki, H., Iyo, A.
Publikováno v:
J. Phys. Soc. Jpn. Vol.77 (2008) p093706.
We report 75As-NMR measurements of the ternary iron arsenide BaFe2As2. 75As-NMR spectra clearly revealed that magnetic transition occurs at around 131 K in our samples, which corresponds to the emergence of spin density wave. Temperature dependence o
Externí odkaz:
http://arxiv.org/abs/0806.4514