Thermal expansion of the superconducting ferromagnet UCoGe

Article

关键词: TRANSPORT-PROPERTIES;    UPT3;    COEXISTENCE;    URHGE;    HEAT;   

DOI  :  10.1103/PhysRevB.82.052502

来源: SCIE

【 摘 要 】

We report measurements of the coefficient of linear thermal expansion, alpha(T), of the superconducting ferromagnet UCoGe. The data taken on a single-crystalline sample along the orthorhombic crystal axes reveal a pronounced anisotropy with the largest length changes along the b axis. The large values of the step sizes Delta alpha at the magnetic and superconducting phase transitions provide solid evidence for bulk magnetism and superconductivity. Specific-heat measurements corroborate bulk superconductivity. Thermal-expansion measurements in magnetic fields B parallel to a, b show Delta alpha at T(C) grows rapidly, which indicates the character of the ferromagnetic transition becomes first orderlike.

【 授权许可】

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