Influence on superconductivity in the parity mixing superconductor Li 2T3B(T:Pt,Pd) by non-magnetic impurity and defect doping

G. Bao, Y. Inada, G. Eguchi, Y. Maeno, M. Ichioka, G. Q. Zheng

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Superconductors with noncentrosymmetric crystal structures such as Li 2T3B(T:Pd,Pt) have been the focus of in-depth research with their parity mixing nature. In this study, we focused our research on non-magnetic impurity effect in Li2T3B(T:Pd,Pt). The nature of the pair breaking by non-magnetic impurity in the parity mixing superconducting state is still unclear. We prepared different quality samples of Li2Pd3B and Li2Pt3B by changing conditions in synthesizing, and sample qualities were estimated by residual resistivity. Spin singlet dominant superconductor Li2Pd3B exhibits the weak Tc suppression attributed by non-magnetic impurity and defects, while Hc2 (0) value increased. This behavior is similar in ordinary s-wave superconductor. On the other hand, for the spin triplet dominant superconductor Li2Pt3B, it was suggested that the Cooper pair was broken and superconducting gap was decreased by non-magnetic impurities and defects. Li2Pt3B is similar to unconventional superconducting state.

Original languageEnglish
Pages (from-to)95-98
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume494
DOIs
Publication statusPublished - May 24 2013

Keywords

  • Li PdB
  • LiPtB
  • Non-magnetic impurity effect
  • Parity mixing superconductor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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