Superconductivity in W 5SiB 2 with the T 2-phase structure studied by the specific heat measurement and band structure calculation

M. Fukuma, K. Kawashima, M. Maruyama, Jun Akimitsu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The superconducting state of W 5SiB 2 with the T 2-phase structure has been investigated by a specific heat measurement and a density of state calculation. The estimated ΔC p/γT c and 2Δ(0)/k BT c values are 1.49 and 3.32, which are close to 1.43 and 3.53 within the weak coupling regime. The electronic specific heat data clearly indicates the absence of gap nodes in the superconducting order parameter, suggesting an isotropic s-wave superconductor. From the density of state calculations, we found that W d-orbital plays an important role for the superconductivity in W 5SiB 2.

Original languageEnglish
Pages (from-to)714-716
Number of pages3
JournalPhysica C: Superconductivity and its Applications
Volume471
Issue number21-22
DOIs
Publication statusPublished - Nov 2011
Externally publishedYes

Fingerprint

Thermal variables measurement
Phase structure
Superconductivity
Band structure
Specific heat
heat measurement
superconductivity
specific heat
Superconducting materials
orbitals
electronics

Keywords

  • DOS
  • Specific heat
  • Superconductor
  • W SiB

ASJC Scopus subject areas

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

Cite this

Superconductivity in W 5SiB 2 with the T 2-phase structure studied by the specific heat measurement and band structure calculation. / Fukuma, M.; Kawashima, K.; Maruyama, M.; Akimitsu, Jun.

In: Physica C: Superconductivity and its Applications, Vol. 471, No. 21-22, 11.2011, p. 714-716.

Research output: Contribution to journalArticle

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