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arXiv · 1004.3705

Higher-Tc superconducting phase in Sr2RuO4 induced by uniaxial pressure

Shunichiro Kittaka·Haruka Taniguchi·Shingo Yonezawa·Hiroshi Yaguchi·Yoshiteru Maeno
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Abstract

We have investigated uniaxial pressure effect on superconductivity of pure Sr2RuO4, whose intrinsic superconducting transition temperature Tc is 1.5 K. It was revealed that a very low uniaxial pressure along the c axis, only 0.2 GPa, induces superconductivity with the onset Tc above 3 K. The present results indicate that pure Sr2RuO4 has two superconducting phases with Tc = 1.5 K and with varying Tc up to 3.2 K. The latter phase exhibits unusual features and is attributable to anisotropic crystal distortions beyond the elastic limit.

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Shunichiro Kittaka, Haruka Taniguchi, Shingo Yonezawa, Hiroshi Yaguchi, Yoshiteru Maeno. 2010-04-21. Higher-Tc superconducting phase in Sr2RuO4 induced by uniaxial pressure. https://doi.org/10.1103/physrevb.81.180510

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