Orbital selectivity of the kink in the dispersion ofSr2RuO4

Abstract
We present detailed energy dispersions near the Fermi level on the monolayer perovskite ruthenate Sr2RuO4, determined by high-resolution angle-resolved photoemission spectroscopy. An orbital selectivity of the kink in the dispersion of Sr2RuO4 has been found: A kink for the Ru 4dxy orbital is clearly observed, but not for the Ru 4dyz and 4dzx ones. The result provides insight into the origin of the kink.
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