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Patterning via Optical Saturable Transitions - Fabrication and Characterization
Published on: December 11, 2014
Spin-Orbit Coupling and Interband Transitions in the Optical Conductivity of Sr_{2}RhO_{4}
Luke J Sandilands1,2,3, Wonshik Kyung1,2, So Yeun Kim1,2
1Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Republic of Korea.
Abstract:
The prototypical correlated metal Sr_{2}RhO_{4} 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 ΓX. 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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