Correlation effects in the electronic structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">SrRuO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Okamoto, Jun; Mizokawa, T.; Fujimori, A.; Hase, Izumi; Nohara, M.; Takagi, H.; Takeda, Yasuo; Takano, Mikio

doi:10.1103/physrevb.60.2281

Cited by 94 publications

(84 citation statements)

References 26 publications

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“…First, we notice that the spectra for the SrRuO 3 surface are quite similar to the recently published data on a single crystalline film cleaned by annealing under an oxygen atmosphere (Park et al, 2004b) and grown and investigated in situ by ultraviolet spectroscopy (Kim et al, 2005). However, our spectra show more structures between 3 and 8 eV BE, as compared to previous data taken on a scraped polycrystal surface (Kim et al, 2005;Fujioka et al, 1997;Okamoto et al, 1999). The second derivative technique was used to reveal the hidden features of the spectrum (Fig.…”

Section: Resultssupporting

confidence: 85%

“…The Ru 4d antibonding states are located between 2.1 eV and the Fermi level. In particular, a sharp peak (A $0.5 eV) near E F is assigned to a coherent part, while the broad structure around 1.5 eV (B) is due to the coherent and incoherent parts of the spectral function (Fujioka et al, 1997;Okamoto et al, 1999). Fig.…”

Section: Resultsmentioning

confidence: 93%

“…For polycrystalline samples prepared ex situ, in situ scraping of the surface has been widely used in PES measurements (Fujioka et al, 1997;Okamoto et al, 1999). However, it was reported that PES spectral features related to electron correlation depend sensitively on the surface preparation method.…”

Section: Methodsmentioning

confidence: 99%

“…However, it was reported that PES spectral features related to electron correlation depend sensitively on the surface preparation method. Actually, SrRuO 3 films photoemission spectra taken on the in situ prepared specimens (Kim et al, 2005) or on the films cleaned by moderate heating at moderate temperatures (T $450 1C) under an O 2 atmosphere (Park et al, 2004b) show more coherent features than the scraped surface (Fujioka et al, 1997;Okamoto et al, 1999). We tried to clean the films by heating them in vacuum.…”

Section: Methodsmentioning

confidence: 99%

“…On the other hand, a photoemission spectroscopy (PES) study of SrRuO 3 polycrystalline samples and thin films revealed that surface cleaning by annealing at moderate temperatures of $400-450 1C in an oxygen atmosphere (Park et al, 2004b;Kim et al, 2005) provides a film surface more suitable for studying an intrinsic electronic structure than the polycrystal samples prepared by in situ scrapping (Fujioka et al, 1997;Okamoto et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Electronic structure of epitaxial SrRuO3 films studied by resonant photoemission

Grebinskij¹,

Senulis²,

Tvardauskas³

et al. 2011

Radiation Physics and Chemistry

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a b s t r a c tThe electronic structure of epitaxial SrRuO 3 thin films annealed at 300 1C in ultra high vacuum is studied by resonant photoemission spectroscopy using synchrotron radiation. The valence band photoemission spectra show a good agreement with theoretical band structure calculations indicating a good quality of the film surface. A method was proposed, which allows extracting the partial density of states in the case of weak and broad resonance. The Ru 4d spectral weights obtained experimentally are in a very good agreement with theoretical predictions, confirming a strong mixing between Ru 4d and O 2p states, as well as the signature of electron correlation near the Fermi level in SrRuO 3 .

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Electronic structure of epitaxial SrRuO3 films studied by resonant photoemission

Grebinskij¹,

Senulis²,

Tvardauskas³

et al. 2011

Radiation Physics and Chemistry

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Structure and Properties of Functional Oxide Thin Films: Insights From Electronic‐Structure Calculations

2011

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The confluence of state-of-the-art electronic-structure computations and modern synthetic materials growth techniques is proving indispensable in the search for and discovery of new functionalities in oxide thin films and heterostructures. Here, we review the recent contributions of electronic-structure calculations to predicting, understanding, and discovering new materials physics in thin-film perovskite oxides. We show that such calculations can accurately predict both structure and properties in advance of film synthesis, thereby guiding the search for materials combinations with specific targeted functionalities. In addition, because they can isolate and decouple the effects of various parameters which unavoidably occur simultaneously in an experiment-such as epitaxial strain, interfacial chemistry and defect profiles-they are able to provide new fundamental knowledge about the underlying physics. We conclude by outlining the limitations of current computational techniques, as well as some important open questions that we hope will motivate further methodological developments in the field.

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Strong Visible‐Light Absorption and Hot‐Carrier Injection in TiO₂/SrRuO₃ Heterostructures

Lee

Apgar

Martin

2013

Advanced Energy Materials

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Correlated electron oxides prove a diverse landscape of exotic materials' phenomena and properties. One example of such a correlated oxide material is strontium ruthenate (SrRuO3) which is known to be a metallic itinerant ferromagnet and for its widespread utility as a conducting electrode in oxide heterostructures. We observe that the complex electronic structure of SrRuO3 is also responsible for unexpected optical properties including high absorption across the visible spectrum (commensurate with a low band gap semiconductor) and remarkably low reflection compared to traditional metals. By coupling this material to a wide band gap semiconductor (TiO2) we demonstrate dramatically enhanced visible light absorption and large photocatalytic activities. The devices function by photo‐excited hot‐carrier injection from the SrRuO3 to the TiO2 and the effect is enhanced in thin films due to electronic structure changes. This observation provides an exciting new approach to the challenge of designing visible‐light photosensitive materials.

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Correlation effects in the electronic structure ofSrRuO3

Cited by 94 publications

References 26 publications

Electronic structure of epitaxial SrRuO3 films studied by resonant photoemission

Electronic structure of epitaxial SrRuO3 films studied by resonant photoemission

Structure and Properties of Functional Oxide Thin Films: Insights From Electronic‐Structure Calculations

Strong Visible‐Light Absorption and Hot‐Carrier Injection in TiO₂/SrRuO₃ Heterostructures

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Correlation effects in the electronic structure ofSrRuO3

Cited by 94 publications

References 26 publications

Electronic structure of epitaxial SrRuO3 films studied by resonant photoemission

Electronic structure of epitaxial SrRuO3 films studied by resonant photoemission

Structure and Properties of Functional Oxide Thin Films: Insights From Electronic‐Structure Calculations

Strong Visible‐Light Absorption and Hot‐Carrier Injection in TiO2/SrRuO3 Heterostructures

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Strong Visible‐Light Absorption and Hot‐Carrier Injection in TiO₂/SrRuO₃ Heterostructures