Superconductivity in Sr2RuO4-Sr3Ru2O7 eutectic crystals

Abstract

Superconducting behavior has been observed in the Sr2RuO4-Sr3Ru2O7 eutectic system as grown by the flux-feeding floating zone technique. A supercurrent flows across a single interface between Sr2RuO4 and Sr3Ru2O7 areas at distances that are far beyond those expected in a conventional proximity scenario. The current-voltage characteristics within the Sr3Ru2O7 macrodomain, as extracted from the eutectic, exhibit signatures of superconductivity in the bilayered ruthenate. Detailed microstructural, morphological and compositional analyses address issues on the concentration and the size of Sr2RuO4 inclusions within the Sr3Ru2O7 matrix. We speculate on the possibility of inhomogeneous superconductivity in the eutectic Sr3Ru2O7 and exotic pairing induced by the Sr2RuO4 inclusions.

Pages 4, figures 3, submitted to Phys. Rev. Lett

References in corpus (6)

• Formation of a Nematic Fluid at High Fields in Sr3Ru2O7
• Interband proximity effect and nodes of superconducting gap in Sr2RuO4
• Electronic Structure and Fermiology of Sr${}_3$Ru${}_2$O${}_7$
• Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7
• The de Haas-van Alphen effect across the metamagnetic transition in Sr${}_3$Ru${}_2$O${}_7$
• Multiple superconducting transitions in the Sr3Ru2O7 region of Sr3Ru2O7-Sr2RuO4 eutectic crystals

Cited by in corpus (7)

• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Complex-Stripe Phases Induced by Staggered Rashba Spin-Orbit Coupling
• Structural and electronic properties of Sr2RuO4-Sr3Ru2O7 heterostructure
• Advantages of using YBCO-Nanowire-YBCO heterostructures in the search for Majorana Fermions
• Random Spin-orbit Coupling in Spin Triplet Superconductors: Stacking Faults in Sr_2RuO_4 and CePt_3Si
• Spatial development of superconductivity in the Sr2RuO4-Ru eutectic system
• Evidence for the Sr2RuO4 intercalations in the Sr3Ru2O7 region of the Sr3Ru2O7-Sr2RuO4 eutectic system