Evidence from tunneling spectroscopy for a quasi-one-dimensional origin of superconductivity in Sr$_2$RuO$_4$

To establish the mechanism of unconventional superconductivity in Sr$_2$RuO$_4$, a prerequisite is direct information concering the momentum-space structure of the energy gaps $\Delta_i(k)$, and in particular whether the pairing strength is stronger (``dominant'') on the quasi-one-dimensional ($\alpha$ and $\beta$) or on the quasi-two-dimensional ($\gamma$) Fermi surfaces. We present scanning tunneling spectroscopy measurements of the density of states spectra in the superconducting state of Sr$_2$RuO$_4$ for $0.1 T_c

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.MAR.Z47.6