| Full text | |
| Author(s): |
Jha, Rajveer
;
Avila, Marcos A.
;
Ribeiro, Raquel A.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | SUPERCONDUCTOR SCIENCE & TECHNOLOGY; v. 30, n. 2 FEB 2017. |
| Web of Science Citations: | 3 |
| Abstract | |
We demonstrate the superconducting properties of,. and hydrostatic pressure effect on, BaBi3 and SrBi3 superconductors. We measure the dc magnetic susceptibility under hydrostatic pressure for both compounds, which shows a positive pressure coefficient of dT(c)/dP = 1.22 K GPa(-1) for BaBi3 and a negative pressure coefficient of dT(c)/dP = -0.43 K GPa(-1) for SrBi3. The normal state electrical resistivity shows that both compounds are highly metallic in nature. The upper critical fields H-c2 evaluated by resistivity under magnetic fields rho(T, H) are 22 kOe for BaBi3 and 2.9 kOe for SrBi3. A specific heat jump of Delta C-e/gamma T-c = 1.05 suggests weak coupling superconductivity in BaBi3, whereas Delta C-e/gamma T-c = 2.08 for SrBi3 is higher than the Bardeen-Cooper- Schrieffer theory value of 1.43, indicating a strong coupling superconductor. (AU) | |
| FAPESP's process: | 15/15403-9 - Study of model nanostructured systems (synthesis, characterization and manipulation) |
| Grantee: | Rajveer Jha |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 11/19924-2 - Study and development of advanced novel materials: electronic, magnetic and nanostructured: an interdisciplinary approach |
| Grantee: | Carlos Rettori |
| Support Opportunities: | Research Projects - Thematic Grants |