Nucleation of Vortex State in Ru-inclusion in Eutectic Ruthenium Oxide Sr2RuO4-Ru

Hirono Kaneyasu; Manfred Sigrist

doi:10.1143/JPSJ.79.053706

Nucleation of Vortex State in Ru-inclusion in Eutectic Ruthenium Oxide Sr2RuO4-Ru

Superconductivity 2015-05-18 v4

Authors: Hirono Kaneyasu , Manfred Sigrist

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Abstract

Eutectic samples of Sr2RuO4-Ru possess many micrometer-sized Ru-metal inclusions. Based on a Ginzburg-Landau formulation we analyze the interplay of the chiral p-wave state of Sr2RuO4 (Tc = 1.5 K) and the s-wave state of Ru metal (Tc,Ru = 0.5 K) for an inclusion of cylindrical geometry. As a consequence of the mismatch of the order parameter phase, the occurrence of a spontaneous flux distribution appears for T < Tc,Ru which evolves into a "Josephson vortex" on the Sr2RuO4-Ru interface. At a sufficiently low temperature a depinning transition can occur whereby the vortex moves to the center of the cylinder.

Keywords

vortex nucleation ruthenium inclusion eutectic Sr2RuO4-Ru chiral p-wave s-wave Ginzburg-Landau theory Josephson vortex depinning transition

Cite

@article{arxiv.1002.4793,
  title  = {Nucleation of Vortex State in Ru-inclusion in Eutectic Ruthenium Oxide Sr2RuO4-Ru},
  author = {Hirono Kaneyasu and Manfred Sigrist},
  journal= {arXiv preprint arXiv:1002.4793},
  year   = {2015}
}

Comments

4 pages, 2 figures

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