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

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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 2009
Externally publishedYes

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thermodynamic properties
specific heat
heat measurement
electronics
magnetic fields

Keywords

  • Ir Ga
  • Rh Ga
  • Specific heat
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Thermodynamic properties of the non-centrosymmetric type-I superconductor Rh 2Ga 9 and Ir 2Ga 9 . / Wakui, Kouhei; Akutagawa, Satoshi; Kase, Naoki; Kawashima, Kenji; Muranaka, Takahiro; Iwahori, Yasufumi; Abe, Jiro; Akimitsu, Jun.

In: Journal of the Physical Society of Japan, Vol. 78, No. 3, 034710, 03.2009.

Research output: Contribution to journalArticle

Wakui, Kouhei ; Akutagawa, Satoshi ; Kase, Naoki ; Kawashima, Kenji ; Muranaka, Takahiro ; Iwahori, Yasufumi ; Abe, Jiro ; Akimitsu, Jun. / Thermodynamic properties of the non-centrosymmetric type-I superconductor Rh 2Ga 9 and Ir 2Ga 9 . In: Journal of the Physical Society of Japan. 2009 ; Vol. 78, No. 3.
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AU - Wakui, Kouhei

AU - Akutagawa, Satoshi

AU - Kase, Naoki

AU - Kawashima, Kenji

AU - Muranaka, Takahiro

AU - Iwahori, Yasufumi

AU - Abe, Jiro

AU - Akimitsu, Jun

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AB - 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.

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