A Review of Electronic Transport in Superconducting Sr$_2$RuO$_4$ Junctions
Muhammad Shahbaz Anwar, Jason W. A. Robinson
TL;DR
This review discusses electronic transport experiments in Sr$_2$RuO$_4$ superconducting junctions, highlighting evidence for chiral superconductivity and emphasizing the need for further studies to clarify the pairing symmetry.
Contribution
It synthesizes current transport measurements in Sr$_2$RuO$_4$ junctions and identifies key directions for future research to understand its superconducting state.
Findings
Evidence for chiral domain walls in Sr$_2$RuO$_4$
Transport measurements suggest chiral superconductivity
Further studies needed for definitive pairing symmetry
Abstract
We review electronic transport in superconducting junctions with SrRuO. Transport measurements provide evidence for chiral domain walls and, therefore, chiral superconductivity in superconducting SrRuO, but so far, the symmetry of the underlying superconducting state remains inconclusive. Further studies involving density of states measurements and spin-polarised transport in local/non--local SrRuO junctions with magnetic materials could lead to fundamental discoveries and a better understanding of the superconducting state.
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