Superconductivity in W5SiB2 with the T 2-phase structure studied by the specific heat measurement and band structure calculation

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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The superconducting state of W5SiB2 with the T 2-phase structure has been investigated by a specific heat measurement and a density of state calculation. The estimated ΔC p/γTc and 2Δ(0)/kBTc 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 5SiB2.

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

Keywords

  • DOS
  • Specific heat
  • Superconductor
  • WSiB

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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