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2015 | 127 | 2 | 260-262
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Multiband d-p Model for the Description of Sr₂RuO₄

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We study electronic structure of multiband d-p model describing RuO₄ layer such as realized in Sr₂RuO₄. The model takes into account nearest-neighbor anisotropic ruthenium-oxygen and oxygen-oxygen hoppings, intra-atomic Coulomb interaction, Hund's exchange and in addition spin-orbit coupling on ruthenium. The RuO₄ is universally considered as a pure t_{2g} system (with e_{g} orbitals empty) due to sizable gap between t_{2g} and e_{g} levels. We show that ruthenium e_{g} orbitals are in fact occupied, similarly like showed earlier for CoO₂ layers.
  • Marian Smoluchowski Institute of Physics, Jagiellonian University, W.S. Reymonta 4, PL-30-059 Kraków, Poland
  • Marian Smoluchowski Institute of Physics, Jagiellonian University, W.S. Reymonta 4, PL-30-059 Kraków, Poland
  • Max-Planck Institut für Festkörperforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany
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