Superconductivity in W5SiB2 with the T2-phase structure studied by the specific heat measurement and band structure calculation
| Autor: | Jun Akimitsu, M. Maruyama, Kenji Kawashima, M. Fukuma |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Coupling
Superconductivity Physics Condensed matter physics Isotropy Structure (category theory) Energy Engineering and Power Technology State (functional analysis) Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Superconductivity Phase (matter) Density of states Electrical and Electronic Engineering Electronic band structure |
| Zdroj: | Physica C: Superconductivity and its Applications. 471:714-716 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/j.physc.2011.05.035 |
| Popis: | The superconducting state of W5SiB2 with the T2-phase structure has been investigated by a specific heat measurement and a density of state calculation. The estimated ΔCp/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 W5SiB2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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