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Superconductivity in BaIrSi$$_2$$ with noncentrosymmetric crystal structure probed by Muon Spin Rotation

反転対称性の破れた構造を持つBaIrSi$$_2$$の超伝導状態のミュオンスピン回転法による研究

宮崎 一輝*; 髭本 亘  ; 網田 裕斗; 伊藤 孝   ; 磯部 雅朗*

Miyazaki, Itsuki*; Higemoto, Wataru; Oda, Yuto; Ito, Takashi; Isobe, Masaaki*

Recently, barium-iridium silicide BaIrSi$$_2$$ including Ir with 5d electron was discovered. This compound has noncentrosymmetric crystal structure and superconductivity appears below Tc=6K. To clarify the superconducting properties, we have measured the temperature dependence of the magnetic penetration depth in BaIrSi$$_2$$ using muon spin rotation measurement at J-PARC. The structure of the superconducting gap and time reversal symmetry of Cooper pair will be discussed.

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