Orbitally selective breakdown of Fermi liquid quasiparticles in Ca${}_{1.8}$Sr${}_{0.2}$RuO${}_4$

Denys Sutter, Minjae Kim, Christian Matt +16

We present a comprehensive angle-resolved photoemission spectroscopy study of Ca${}_{1.8}$Sr${}_{0.2}$RuO${}_4$. Four distinct bands are revealed and along the Ru-O bond direction their…