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arXiv · 0907.0411

Specific heat studies of pure Nb3Sn single crystals at low temperature

R. Escudero·F. Morales·S. Bernes
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Abstract

Specific heat measurements performed on high purity vapor-grown Nb$_3$Sn crystals show clear features related to both the martensitic and superconducting transitions. Our measurements indicate that the martensitic anomaly does not display hysteresis, meaning that the martensitic transition could be a weak first or a second order thermodynamic transition. Careful measurements of the two transition temperatures display an inverse correlation between both temperatures. At low temperature specific heat measurements show the existence of a single superconducting energy gap feature.

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R. Escudero, F. Morales, S. Bernes. 2009-07-02. Specific heat studies of pure Nb3Sn single crystals at low temperature. https://doi.org/10.1088/0953-8984%2F21%2F32%2F325701

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