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Abstract:
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.
