Thermodynamic properties of the non-centrosymmetric type-I superconductor Rh 2Ga 9 and Ir 2Ga 9

Kouhei Wakui, Satoshi Akutagawa, Naoki Kase, Kenji Kawashima, Takahiro Muranaka, Yasufumi Iwahori, Jiro Abe, Jun Akimitsu

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We report low-temperature specific heat measurements on the single-crystalline non-centrosymmetric superconductors T 2Ga 9 (T = Rh, Ir) with T c = 1:95 and 2.25 K. Electronic contribution on the specific heat, C el, in each compound is well described by the BCS scheme, suggesting that both Rh 2Ga 9 and Ir 2Ga 9 fully open an isotropic gap in the superconducting state. The values of ΔC/γTc and 2Δ(0)=k BT c indicate that both compounds are categorized as a weak coupling superconductor. The value of ξ obtained from specific heat as a function of magnetic field strongly suggestes that T 2Ga 9 is a type-I superconductor.

Original languageEnglish
Article number034710
Journaljournal of the physical society of japan
Volume78
Issue number3
DOIs
Publication statusPublished - Mar 1 2009
Externally publishedYes

Keywords

  • Ir Ga
  • Rh Ga
  • Specific heat
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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