Superconductivity in Rh_2Ga_9 and Ir_2Ga_9 without Inversion Symmetry(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
- 論文の詳細を見る
Superconductivity with T_c≃2K was discovered in the intermetallic binary compounds Rh_2Ga_9 and IrGa_9. This is the first observation of superconductivity in the Rh-Ga and Ir-Ga binary systems. Both compounds crystallize in a distorted Co_2Al_9-type structure (monoclinic, space group: Pc), which lacks spatial inversion symmetry. Specific heat measurements revealed that both compounds are weak-coupling BCS superconductors having an isotropic superconducting gap. Measurements in magnetic fields indicated type-I superconductivity with a critical field Hc(0)≃130Oe for Rh_2Ga_9 and type-II superconductivity with an upper critical field H_<c2>(0)≃250 Oe for Ir_2Ga_9.
- 社団法人日本物理学会の論文
- 2007-07-15
著者
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広井 善二
京都大学化学研究所
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OKAMOTO Yoshihiko
Institute for Solid State Physics, University of Tokyo
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HIROI Zenji
Institute for Solid State Physics, University of Tokyo
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広井 善二
Institute For Solid State Physics University Of Tokyo
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Hiroi Z
Institute For Solid State Physics University Of Tokyo
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Hiroi Zenji
Institute For Chemical Research Kyoto University
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HIROI Zenji
ISSP, University of Tokyo
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TAKAGI Hidenori
Department of Applied Physics,The University of Tokyo
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NOHARA Minoru
Department of Physics,Hiroshima University
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Takagi Hidenori
Department Of Advanced Materials Science University Of Tokyo
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Okamoto Yoshihiko
Institute For Solid State Physics University Of Tokyo
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Nohara M
Department Of Advanced Materials Science University Of Tokyo
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Nohara Minoru
Department Of Mechanical Engineering Kure National College Of Technology
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Nohara Minoru
Graduate School Of Frontier Sciences University Of Tokyo
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SHIBAYAMA Takeshi
Department of Advanced Materials, University of Tokyo
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ARUGA KATOARI
CREST, Japan Science and Technology Agency (JST)
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Aruga Katoari
Crest Japan Science And Technology Agency (jst):riken (the Institute Of Physical And Chemical Resear
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Hiroi Z
Univ. Tokyo Kashiwa Jpn
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Shibayama Takeshi
Department Of Advanced Materials University Of Tokyo
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Nohara Minoru
Department Of Advanced Materials Science University Of Tokyo
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Aruga Katori
CREST, Japan Science and Technology Agency (JST)
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Takagi Hidenori
Department of Advanced Materials and Department of Applied Chemistry, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
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