Abstract:We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr 2 RuO 4 using laser-based angle-resolved photoemission spectroscopy. Our precise measurement of the Fermi surface confirms the importance of spin-orbit coupling in this material and reveals that its effective value is enhanced by a factor of about 2, due to electronic correlations. The self-energies for the β and γ sheets are found to display significant angular dependence. By taking into account the… Show more
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