Tuesday, August 6, 2013

1308.0894 (I. A. Firmo et al.)

Evidence from Tunneling Spectroscopy for a Quasi-One Dimensional Origin
of Superconductivity in Sr2RuO4

I. A. Firmo, S. Lederer, C. Lupien, A. P. Mackenzie, J. C. Davis, S. A. Kivelson
To establish the mechanism of unconventional superconductivity in Sr$_2$RUO$_4$, a prerequisite is direct information concerning the momentum-space structure of the energy gaps $\Delta_i(k)$, and in particular whether the pairing strength is stronger ("dominant") on the quasi-1D ($\alpha$ and $\beta$) or on the quasi-2D ($\gamma$) Fermi surfaces. We present scanning tunneling microscopy (STM) measurements of the density-of-states spectra in the superconducting state of Sr$_2$RuO$_4$ for $0.1 T_CView original: http://arxiv.org/abs/1308.0894

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