Proposal to detect plane-parallel nodal lines in Sr2 RuO4 via tunneling spectroscopy

Since the original proposal of an unconventional chiral order parameter in the ruthenate perovskite superconductor Sr2 RuO4, much attention has been given to the possibility of plane-parallel nodal lines on the predominant γ cylindrical Fermi surface given evidence for low-lying quasiparticle excitations in this material. Here I propose a tunneling spectroscopy experiment to determine whether such nodal lines in fact exist.