Multigap superconductivity in sesquicarbides La2C3 and Y2C3

S. Kuroiwa; Y. Saura; J. Akimitsu; M. Hiraishi; M. Miyazaki; K. H. Satoh; S. Takeshita; R. Kadono

doi:10.1103/PhysRevLett.100.097002

Multigap superconductivity in sesquicarbides La2C3 and Y2C3

S. Kuroiwa, Y. Saura, J. Akimitsu, M. Hiraishi, M. Miyazaki, K. H. Satoh, S. Takeshita, R. Kadono

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

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 [σv(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 σv(T).

Original language	English
Article number	097002
Journal	Physical Review Letters
Volume	100
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.100.097002
Publication status	Published - Mar 6 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.100.097002

Cite this

@article{3fae108b2e074c7ea0e6ab0225f5a3e3,

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 [σv(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 σv(T).",

author = "S. Kuroiwa and Y. Saura and J. Akimitsu and M. Hiraishi and M. Miyazaki and Satoh, {K. H.} and S. Takeshita and R. Kadono",

year = "2008",

month = mar,

day = "6",

doi = "10.1103/PhysRevLett.100.097002",

language = "English",

volume = "100",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

TY - JOUR

T1 - Multigap superconductivity in sesquicarbides La2C3 and Y2C3

AU - Kuroiwa, S.

AU - Saura, Y.

AU - Akimitsu, J.

AU - Hiraishi, M.

AU - Miyazaki, M.

AU - Satoh, K. H.

AU - Takeshita, S.

AU - Kadono, R.

PY - 2008/3/6

Y1 - 2008/3/6

N2 - 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 [σv(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 σv(T).

AB - 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 [σv(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 σv(T).

UR - http://www.scopus.com/inward/record.url?scp=40849120745&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=40849120745&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.100.097002

DO - 10.1103/PhysRevLett.100.097002

M3 - Article

AN - SCOPUS:40849120745

SN - 0031-9007

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 097002

ER -

Multigap superconductivity in sesquicarbides La2C3 and Y2C3

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this