Superconductivity with high upper critical field in Ta-Hf Alloys
| Autor: | Meena, P. K., Jangid, S., Kushwaha, R. K., Singh, R. P. |
|---|---|
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Rev. Materials 7, 084801 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevMaterials.7.084801 |
| Popis: | High upper-critical field superconducting alloys are required for superconducting device applications. In this study, we extensively characterized the structure and superconducting properties of alloys Ta$_{x}$ Hf$_{1-x}$ (x = 0.2, 0.4, 0.5, 0.6 and 0.8). The substitution of Hf (T$_{C}$ = 0.12 K, type-I superconductor) with Ta (T$_{C}$ = 4.4 K, type-I superconductor) shows an anomalous enhancement of T$_{C}$ with variation of composition. Interestingly, all compositions exhibited strongly coupled bulk type-II superconductivity with a high upper critical field. In particular, for compositions x = 0.2, and 0.4, the upper critical field (H$_{C2}$) approached the Pauli limiting field. Comment: 8 pages, 6 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|