Superconductivity with high upper critical field in an equiatomic high entropy alloy Sc-V-Ti-Hf-Nb

2024/04/26 by S. Jangid, Jangid, S., P. K. Meena +13
Engineering · #Advanced Materials Characterization Techniques #FOS: Physical sciences #High Entropy Alloys Studies #Intermetallics and Advanced Alloy Properties #Superconductivity (cond-mat.supr-con)

paper · pdf · doi:10.48550/arxiv.2404.17363

openalex publication_date 2024/04/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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_0.20V_0.20Ti_0.20Hf_0.20Nb_0.20, crystallizing in a body-centered cubic crystal structure (Im3m). 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.

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