Strong spin-orbit coupling effects on the Fermi surface of Sr2RuO4 and Sr2RhO4

Abstract

We present a first-principle study of spin-orbit coupling effects on the Fermi surface of Sr2RuO4 and Sr2RhO4. For nearly degenerate bands, spin-orbit coupling leads to a dramatic change of the Fermi surface with respect to non-relativistic calculations; as evidenced by the comparison with experiments on Sr2RhO4, it cannot be disregarded. For Sr2RuO4, the Fermi surface modifications are more subtle but equally dramatic in the detail: spin-orbit coupling induces a strong momentum dependence, normal to the RuO2 planes, for both orbital and spin character of the low-energy electronic states. These findings have profound implications for the understanding of unconventional superconductivity in Sr2RuO4.

A high-resolution version can be found at http://www.physics.ubc.ca/~quantmat/ARPES/PUBLICATIONS/Articles/SO_Sr2RuO4.pdf

References in corpus (8)

• Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Fermi Surface, Surface States, and Surface Reconstruction in Sr2RuO4
• Detailed Topography of the Fermi Surface of Sr2RuO4
• Phenomenology of the superconducting state in Sr2RuO4
• Technique for bulk Fermiology by photoemission applied to layered ruthenates
• Quantitative analysis of Sr2RuO4 ARPES spectra: Many-body interactions in a model Fermi liquid
• Fermi surface and quasiparticle excitations of Sr${}_2$RhO${}_4$

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