title: Multigap superconductivity in sesquicarbides La2C3 and Y2C3.
abstract: A complex structure of the superconducting order parameter in Ln2C3 (Ln=La,Y) is demonstrated by muon spin relaxation measurements in their mixed state. The muon depolarization rate sigma v(T)] exhibits a characteristic temperature dependence that can be perfectly described by a phenomenological double-gap model for nodeless superconductivity. While the magnitude of two gaps is similar between La2C3 and Y2C3, a significant difference in the interband coupling between those two cases is clearly observed in the behavior of sigma v(T).
authors: Department of Physics and Mathematics, Aoyama Gakuin University, Sagamihara, Kanagawa 229-8558, Japan.
authors: S
authors: S
authors: Kuroiwa
authors: Y
authors: Y
authors: Saura
authors: J
authors: J
authors: Akimitsu
authors: M
authors: M
authors: Hiraishi
authors: M
authors: M
authors: Miyazaki
authors: K H
authors: KH
authors: Satoh
authors: S
authors: S
authors: Takeshita
authors: R
authors: R
authors: Kadono