Výsledky vyhledávání - "Hazama, Kaori"

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Fermi surface and mass enhancement in KFe$_2$As$_2$ from de Haas-van Alphen effect measurements

Autor: Terashima, Taichi, Kimata, Motoi, Kurita, Nobuyuki, Satsukawa, Hidetaka, Harada, Atsushi, Hazama, Kaori, 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: J. Phys. Soc. Jpn. 79, 053702 (2010).

We report on a band structure calculation and de Haas-van Alphen measurements of KFe$_2$As$_2$. Three cylindrical Fermi surfaces are found. Effective masses of electrons range from 6 to 18$m_e$, $m_e$ being the free electron mass. Remarkable discrepa

Externí odkaz: http://arxiv.org/abs/1001.3441

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Pressure-Induced Antiferromagnetic Bulk Superconductor EuFe$_2$As$_2$

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

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EuFe$_2$As$_2$ under high pressure: an antiferromagnetic bulk superconductor

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

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Resistivity and upper critical field in KFe$_2$As$_2$ single crystals

Autor: Terashima, Taichi, Kimata, Motoi, Satsukawa, Hidetaka, Harada, Atsushi, Hazama, Kaori, Uji, Shinya, Harima, Hisatomo, Chen, Gen-Fu, Luo, Jian-Lin, Wang, Nan-Lin

Publikováno v: J. Phys. Soc. Jpn. 78 (2009) 063702

We report resistivity measurements performed on KFe$_2$As$_2$ single crystals down to $T$ = 0.3 K and in magnetic fields up to 17.5 T. The in-plane resistivity vs. $T$ curve has a convex shape down to $\sim$50 K and shows a $T^2$ dependence below $\s

Externí odkaz: http://arxiv.org/abs/0903.3783

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Fermi surface in BaNi$_2$P$_2$

Autor: Terashima, Taichi, Kimata, Motoi, Satsukawa, Hidetaka, Harada, Atsushi, Hazama, Kaori, Imai, Motoharu, Uji, Shinya, Kito, Hijiri, Iyo, Akira, Eisaki, Hiroshi, Harima, Hisatomo

Publikováno v: J. Phys. Soc. Jpn. 78 (2009) 033706 (4 pages)

We report measurements of the de Haas-van Alphen (dHvA) oscillation and a band structure calculation for the pnictide superconductor BaNi$_2$P$_2$, which is isostructural to BaFe$_2$As$_2$, the mother compound of the iron-pnictide high-$T_c$ supercon

Externí odkaz: http://arxiv.org/abs/0901.3394

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