Comprehensive measurements reveal significant anisotropic behavior in superconductivity of Sn₄Au, suggesting magnetic anisotropy shapes its properties.
We investigate the anisotropic superconducting properties of the intermetallic compound Sn₄Au through comprehensive magneto-transport and thermodynamic measurements. Our study reveals a pronounced anisotropy in the upper critical field (Hc2) with respect to crystallographic direction, indicating significant directional dependence of the superconducting coherence lengths. The anisotropy is closely correlated with the magnetic response of the system, suggesting that magnetic anisotropy plays a central role in shaping the superconducting state. Through analysis of temperature- and field-dependent data, we extract coherence lengths along different crystallographic axes and discuss their implications for the pairing mechanism in this low-temperature superconductor. These findings not only provide insights into the superconducting gap structure of Sn₄Au but also enrich the broader understanding of anisotropic superconductivity in non-centrosymmetric intermetallics.
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Sudhakar Geruganti (2025) studied this question.
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