Zobrazeno 11 - 20
of 4 378
pro vyhledávání: '"Yamada, I."'
Publikováno v:
J. Phys. Soc. Jpn. 82 (2013) 055001/1-2
We report on Cu nuclear quadrupole resonance (NQR) and NMR studies of an optimally hole-doped superconductor Ca2-xNaxCuO2Cl2 (Tc ~ 28 K for x ~ 0.2). In spite of robust oxygen composition, we observed a multiple broad NQR frequency spectrum and nonex
Externí odkaz:
http://arxiv.org/abs/1304.0512
Autor:
Ohishi, K., Yamada, I., Koda, A., Saha, S. R., Kadono, R., Higemoto, W., Kojima, K. M., Azuma, M., Takano, M.
The internal magnetic field distribution in a mixed state of a cuprate superconductor, Ca$_{2-x}$Na$_x$CuO$_2$Cl$_2$ ($T_{\rm c}\simeq28.5$ K, near the optimal doping), was measured by muon spin rotation ($\mu$SR) technique up to 60 kOe. The $\mu$SR
Externí odkaz:
http://arxiv.org/abs/0910.5585
Autor:
Gougoussis, C., Rueff, J. -P., Calandra, M., d'Astuto, M., Jarrige, I., Ishii, H., Shukla, A., Yamada, I., Azuma, M., Takano, M.
Using high resolution x-ray absorption spectroscopy and state-of-the-art electronic structure calculations we demonstrate that the pre-edge region at the Cu K-edge of high T$_c$ cuprates is composed of several excitationsinvisible in standard X-ray a
Externí odkaz:
http://arxiv.org/abs/0909.0894
Autor:
Hiraka, H., Hayashi, Y., Wakimoto, S., Takeda, M., Kakurai, K., Adachi, T., Koike, Y., Yamada, I., Miyazaki, M., Hiraishi, M., Takeshita, S., Kohda, A., Kadono, R., Tranquada, J. M., Yamada, K.
Spin correlations in the overdoped region of Bi1.75Pb0.35Sr1.90CuO6+z have been explored with Fe-doped single crystals characterized by neutron scattering, muon-spin-rotation (muSR) spectroscopy, and magnetic susceptibility measurements. Static incom
Externí odkaz:
http://arxiv.org/abs/0907.3590
Autor:
Hanaguri, T., Kohsaka, Y., Ono, M., Maltseva, M., Coleman, P., Yamada, I., Azuma, M., Takano, M., Ohishi, K., Takagi, H.
Publikováno v:
Science, vol. 323, pp. 923-926 (2009)
Coherence factors are a hallmark of superconductivity as a pair-condensation phenomenon. When electrons pair, quasi-particles develop an acute sensitivity to different types of scattering potential, described by the appearance of coherence factors in
Externí odkaz:
http://arxiv.org/abs/0903.1674
Publikováno v:
Journal of Physics: Conference Series; Dec2023, Vol. 2687 Issue 1, p1-6, 6p
Autor:
Satoh, K. H., Hiraishi, M., Miyazaki, M., Takeshita, S., Koda, A., Kadono, R., Yamada, I., Oka, K., Azuma, M., Shimakawa, Y., Takano, M.
A weakening of superconductivity upon substitution of Cu by Zn (0.5~1 %) is observed in a high-T_c cuprate, Ca_{2-x}Na_xCuO2Cl2, near the hole concentration of 1/8 per Cu. The superconducting transition temperature and its volume fraction, estimated
Externí odkaz:
http://arxiv.org/abs/0809.0735
Autor:
Hanaguri, T., Kohsaka, Y., Davis, J. C., Lupien, C., Yamada, I., Azuma, M., Takano, M., Ohishi, K., Ono, M., Takagi, H.
Publikováno v:
Nature Phys., 3, 865-871 (2007).
High-transition-temperature (high-Tc) superconductivity is ubiquitous in the cuprates containing CuO2 planes but each cuprate has its own character. The study of the material dependence of the d-wave superconducting gap (SG) should provide important
Externí odkaz:
http://arxiv.org/abs/0708.3728
Autor:
Lancaster, T., Blundell, S. J., Baker, P. J., Pratt, F. L., Hayes, W., Yamada, I., Azuma, M., Takano, M.
Publikováno v:
J Phys Condens Matter 19, 376203 (2007)
We present the results of muon-spin relaxation measurements on ferromagnetic BiMnO3. Below T_C=98.0(1) K oscillations in the time-dependence of the muon polarization are observed, characteristic of a quasistatic magnetic field at a single muon site,
Externí odkaz:
http://arxiv.org/abs/0707.2024
Autor:
Tsujii, N., Ejiri, A., Shinohara, K., Watanabe, O., Peng, Y., Iwasaki, K., Ko, Y., Lin, Y., Yatomi, G., Yamada, I., Shirasawa, Y., Hidano, T., Tian, Y., Moeller, C. P.
Publikováno v:
AIP Conference Proceedings; 2023, Vol. 2984 Issue 1, p1-6, 6p