Zobrazeno 1 - 10
of 300
pro vyhledávání: '"Murata, Keizo"'
Autor:
Aizawa, Hirohito, Kuroki, Kazuhiko, Yoshino, Harukazu, Mousdis, George A., Papavassiliou, George C., Murata, Keizo
Publikováno v:
J. Phys. Soc. Jpn. 83, 104705 (2014)
We study the Seebeck effect in the $\tau$-type organic conductors, $\tau$-(EDO-$S$,$S$-DMEDT-TTF)$_{2}$(AuBr$_{2}$)$_{1+y}$ and $\tau$-(P-$S$,$S$-DMEDT-TTF)$_{2}$(AuBr$_{2}$)$_{1+y}$, where EDO-$S$,$S$-DMEDT-TTF and P-$S$,$S$-DMEDT-TTF are abbreviate
Externí odkaz:
http://arxiv.org/abs/1408.2722
Autor:
Kurita, Nobuyuki, Kimata, Motoi, Kodama, Kota, Harada, Atsushi, Tomita, Megumi, Suzuki, Hiroyuki S., Matsumoto, Takehiko, Murata, Keizo, Uji, Shinya, Terashima, Taichi
Publikováno v:
Phys. Rev. B 88, 224510 (2013)
Resistivity and Hall effect measurements of EuFe$_2$As$_2$ up to 3.2\,GPa indicate no divergence of quasiparticle effective mass at the pressure $P_\mathrm{c}$ where the magnetic and structural transition disappears. This is corroborated by analysis
Externí odkaz:
http://arxiv.org/abs/1312.3380
Autor:
Takatsu, Hiroshi, Ishikawa, Jun J., Yonezawa, Shingo, Yoshino, Harukazu, Shishidou, Tatsuya, Oguchi, Tamio, Murata, Keizo, Maeno, Yoshiteru
Extremely large magnetoresistance is realized in the nonmagnetic layered metal PdCoO2. In spite of a highly conducting metallic behavior with a simple quasi-two-dimensional hexagonal Fermi surface, the interlayer resistance reaches up to 35000% for t
Externí odkaz:
http://arxiv.org/abs/1307.6503
Autor:
Kurita, Nobuyuki, Kimata, Motoi, Kodama, Kota, Harada, Atsushi, Tomita, Megumi, Suzuki, Hiroyuki S., Matsumoto, Takehiko, Murata, Keizo, Uji, Shinya, Terashima, Taichi
Publikováno v:
Phys. Rev. B 83, 214513 (2011)
We have constructed a pressure$-$temperature ($P-T$) phase diagram of $P$-induced superconductivity in EuFe$_2$As$_2$ single crystals, via resistivity ($\rho$) measurements up to 3.2 GPa. As hydrostatic pressure is applied, an antiferromagnetic (AF)
Externí odkaz:
http://arxiv.org/abs/1103.4209
Autor:
Kurita, Nobuyuki, Kimata, Motoi, Kodama, Kota, Harada, Atsushi, Tomita, Megumi, Suzuki, Hiroyuki S., Matsumoto, Takehiko, Murata, Keizo, Uji, Shinya, Terashima, Taichi
Publikováno v:
Phys. Rev. B 83, 100501(R) (2011)
We have carried out high-field resistivity measurements up to 27\,T in EuFe$_2$As$_2$ at $P$\,=\,2.5\,GPa, a virtually optimal pressure for the $P$-induced superconductivity, where $T_\mathrm{c}$\,=\,30\,K. The $B_\mathrm{c2}-T_\mathrm{c}$ phase diag
Externí odkaz:
http://arxiv.org/abs/1011.5084
Autor:
Terashima, Taichi, Kurita, Nobuyuki, Kikkawa, Akiko, Suzuki, Hiroyuki S., Matsumoto, Takehiko, Murata, Keizo, Uji, Shinya
Publikováno v:
J. Phys. Soc. Jpn. 79, 103706 (2010)
We report resistivity $\rho$ and Hall effect measurements on EuFe$_2$As$_2$ at ambient pressure and 28 kbar and magnetization measurements at ambient pressure. We analyze the temperature and magnetic-field dependence of $\rho$ and the Hall effect usi
Externí odkaz:
http://arxiv.org/abs/1008.2029
We study the origin of the large thermopower in quasi-two-dimensional a $\tau$-type organic conductor, $\tau-(EDO-S,S-DMEDT-TTF)_2(AuBr_2)_{1+y}$ ($y \le 0.875$), from the view point of a "pudding mold"-type band structure. We calculate the electroni
Externí odkaz:
http://arxiv.org/abs/1002.3397
Autor:
Terashima, Taichi, Suzuki, Hiroyuki S., Tomita, Megumi, Kimata, Motoi, Satsukawa, Hidetaka, Harada, Atsushi, Hazama, Kaori, Matsumoto, Takehiko, Murata, Keizo, Uji, Shinya
We present the magnetic and superconducting phase diagram of EuFe$_2$As$_2$ for $B \parallel c$ and $B \parallel ab$. The antiferromagnetic phase of the Eu$^{2+}$ moments is completely enclosed in the superconducting phase. The upper critical field v
Externí odkaz:
http://arxiv.org/abs/0908.2280
Autor:
Terashima, Taichi, Kimata, Motoi, Satsukawa, Hidetaka, Harada, Atsushi, Hazama, Kaori, Uji, Shinya, Suzuki, Hiroyuki S., Matsumoto, Takehiko, Murata, Keizo
Publikováno v:
J. Phys. Soc. Jpn. 78, 083701 (2009)
We report the ac magnetic susceptibility $\chi_{ac}$ and resistivity $\rho$ measurements of EuFe$_2$As$_2$ under high pressure $P$. By observing nearly 100% superconducting shielding and zero resistivity at $P$ = 28 kbar, we establish that $P$-induce
Externí odkaz:
http://arxiv.org/abs/0904.2618
Autor:
Murata, Keizo, Fukumoto, Yuhei, Yokogawa, Keiichi, Kang, Woun, Takaoka, Ryo, Tada, Ryota, Hirayama, H., Brooks, James S., Graf, David, Yoshino, Harukazu, Sasaki, Takahiko, Kato, Reizo
Publikováno v:
In Physica B: Physics of Condensed Matter 1 March 2015 460:241-244
