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Electronic structure, cohesive properties, and magnetism of SrRuO3
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
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2014 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 90, no 16, 165130- p.Article in journal (Refereed) Published
Abstract [en]

We have performed an extensive test of the ability of density functional theory within several approximations for the exchange-correlation functional, local density approximation + Hubbard U, and local density approximation + dynamic mean field theory to describe magnetic and electronic properties of SrRuO3. We focus on the ferromagnetic phase, illustrating differences between the orthorhombic low-temperature structure versus the cubic high-temperature structure. We assess how magnetism, spectral function, and cohesive properties are affected by methodology, onsite Hubbard U, and double-counting corrections. Further, we compare the impact of the impurity solver on the quasiparticle weight Z, which is in turn compared to experimental results. The spectral functions resulting from the different treatments are also compared to experimental data. Finally, the impact of spin-orbit coupling is studied, allowing us to determine the orbital moments. In the orthorhombic phase, the orbital moments are found to be tilted with respect to the spin moments, emphasizing the importance of taking into account the distortion of the oxygen octahedra.

Place, publisher, year, edition, pages
2014. Vol. 90, no 16, 165130- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-238564DOI: 10.1103/PhysRevB.90.165130ISI: 000343944400003OAI: oai:DiVA.org:uu-238564DiVA: diva2:772719
Available from: 2014-12-17 Created: 2014-12-14 Last updated: 2017-12-05Bibliographically approved

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Grånäs, OscarDi Marco, IgorEriksson, OlleNordström, LarsEtz, Corina

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