Superconductivity in the ternary germanide Y3Pt 4Ge6

Naoki Kase, Takahiro Muranaka, Jun Akimitsu

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A new superconducting ternary germanide, Y3Pt4Ge 6, was discovered at the transition temperature of 2.6 K by the electrical resistivity and magnetic susceptibility measurements. The magnetization versus magnetic field (M-H) curve indicated that Y 3Pt4Ge6 is a type-II superconductor. The lower critical field Hc1 and the upper critical field Hc2 were estimated to be 53 Oe and 2.73 kOe. The coherence length ξ(0)GL, penetration depth λ(0)GL, and Ginzburg-Landau (GL) parameter κ(0) obtained from these values were 347 Å, 3230 Å, and 9.3, respectively. Specific heat measurements revealed that Y3Pt 4Ge6 is a weak-coupling BCS superconductor with an isotropic superconducting gap. The electron-phonon mass enhancement parameter λγ was calculated to be 0.19, which was consistent with the weak-coupling limit inferred from the specific jump ΔC pnTc.

Original languageEnglish
Article number054714
Journaljournal of the physical society of japan
Volume77
Issue number5
DOIs
Publication statusPublished - May 1 2008
Externally publishedYes

Keywords

  • Electrical resistivity
  • Specific heat
  • Superconductivity
  • Susceptibility
  • YPtGe

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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