Strong Increase of Tc of Sr2RuO4 Under Both Tensile and Compressive Strain
Strong Increase of Tc of Sr2RuO4 Under Both Tensile and Compressive Strain
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DOI：
10.1126/science.1248292
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发表时间：
2014-04-18
期刊：
影响因子：
56.9
通讯作者：
Mackenzie, Andrew P.
中科院分区：
文献类型：
--
作者：
Hicks, Clifford W.;Brodsky, Daniel O.;Mackenzie, Andrew P.
非常规秩序的敏感探针是它对对称破缺场的响应。为了探测Sr2RuO4的p(x) +/- ip(y)拓扑超导态，我们构建了一个能够施加高达0.23%的压缩和拉伸应变的装置。沿着< 100 >晶体方向施加的应变使超导转变温度T-c产生强烈的应变对称增加。< 110 >的应变给出了更弱的，主要是反对称的响应。除了推进对Sr2RuO4超导性的理解外，我们的技术还具有潜在的适用性，可用于固态物理中的广泛问题。
A sensitive probe of unconventional order is its response to a symmetry-breaking field. To probe the proposed p(x) +/- ip(y) topological superconducting state of Sr2RuO4, we have constructed an apparatus capable of applying both compressive and tensile strains of up to 0.23%. Strains applied along < 100 > crystallographic directions yield a strong, strain-symmetric increase in the superconducting transition temperature T-c. < 110 > strains give a much weaker, mostly antisymmetric response. As well as advancing the understanding of the superconductivity of Sr2RuO4, our technique has potential applicability to a wide range of problems in solid-state physics.