| Autor: |
Sutter, Denys, Kim, Minjae, Matt, Christian, Horio, Masafumi, Fittipaldi, Rosalba, Vecchione, Antonio, Granata, Veronica, Hauser, Kevin, Sassa, Yasmine, Gatti, Gianmarco, Grioni, Marco, Hoesch, Moritz, Kim, Timur, Rienks, Emile, Plumb, Nicholas, Shi, Ming, Neupert, Titus, Georges, Antoine, Chang, Johan |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Phys. Rev. B 99, 121115(R) (2019) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.99.121115 |
| Popis: |
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 orbital characters are identified through a light polarization analysis and comparison to dynamical mean-field theory calculations. Bands assigned to $d_{xz}, d_{yz}$ orbitals display Fermi liquid behavior with fourfold quasiparticle mass renormalization. Extremely heavy fermions - associated with a predominantly $d_{xy}$ band character - are shown to display non-Fermi-liquid behavior. We thus demonstrate that Ca$_{1.8}$Sr$_{0.2}$RuO$_4$ is a hybrid metal with an orbitally selective Fermi liquid quasiparticle breakdown. |
| Databáze: |
arXiv |
| Externí odkaz: |
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