Journal
PHYSICAL REVIEW LETTERS
Volume 119, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.267402
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Funding
- Institute for Basic Science in Korea [IBS-R009-D1, IBS-R009-G2]
- National Research Foundation of Korea - Ministry of Science, ICT and Future Planning [2014R1A2A1A11054351, 2017R1A2B4009413]
- National Research Foundation of Korea [2017R1A2B4009413, 2014R1A2A1A11054351] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The prototypical correlated metal Sr2RhO4 was studied using optical and photoemission spectroscopy. At low energies and temperatures, the optical data reveal a complex, multicomponent response that on the surface points to an unconventional metallic state in this material. Via a comparison with photoemission, the anomalous optical response may be attributed to an unexpectedly strong interband transition near 180 meV between spin-orbit coupled bands that are nearly parallel along Gamma X. This spin-orbit coupling effect is shown to occur in a number of related metallic ruthenates and explains the previously puzzling optical properties reported for these materials.
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