Superconductivity with high upper critical field in an equiatomic high entropy alloy Sc-V-Ti-Hf-Nb
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866914771902660608 |
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| author | Jangid, S. Meena, P. K. Kushwaha, R. K. Srivastava, S. Manna, P. Mishra, P. Sharma, S. Singh, R. P. |
| author_facet | Jangid, S. Meena, P. K. Kushwaha, R. K. Srivastava, S. Manna, P. Mishra, P. Sharma, S. Singh, R. P. |
| contents | High-entropy alloy (HEA) superconductors have attracted significant attention due to their exceptional low-temperature mechanical and superconducting properties. We report the synthesis and thorough characterization of an equiatomic HEA superconductor with the composition Sc$_{0.20}$V$_{0.20}$Ti$_{0.20}$Hf$_{0.20}$Nb$_{0.20}$, crystallizing in a body-centered cubic crystal structure (Im3$\bar{m}$). Our investigation, using magnetization, transport, and heat capacity measurements, reveals the presence of weakly coupled, fully gapped superconductivity with a transition temperature of 4.17(3) K and the upper critical field exceeding the Pauli paramagnetic limit. The metallic nature, combined with a high upper critical field, positions it as a promising candidate for applications in superconducting devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_17363 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Superconductivity with high upper critical field in an equiatomic high entropy alloy Sc-V-Ti-Hf-Nb Jangid, S. Meena, P. K. Kushwaha, R. K. Srivastava, S. Manna, P. Mishra, P. Sharma, S. Singh, R. P. Superconductivity High-entropy alloy (HEA) superconductors have attracted significant attention due to their exceptional low-temperature mechanical and superconducting properties. We report the synthesis and thorough characterization of an equiatomic HEA superconductor with the composition Sc$_{0.20}$V$_{0.20}$Ti$_{0.20}$Hf$_{0.20}$Nb$_{0.20}$, crystallizing in a body-centered cubic crystal structure (Im3$\bar{m}$). Our investigation, using magnetization, transport, and heat capacity measurements, reveals the presence of weakly coupled, fully gapped superconductivity with a transition temperature of 4.17(3) K and the upper critical field exceeding the Pauli paramagnetic limit. The metallic nature, combined with a high upper critical field, positions it as a promising candidate for applications in superconducting devices. |
| title | Superconductivity with high upper critical field in an equiatomic high entropy alloy Sc-V-Ti-Hf-Nb |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2404.17363 |