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Author Ahn, J. S. ♦ Bak, J. ♦ Choi, H. S. ♦ Noh, T. W. ♦ Han, J. E. ♦ Bang, Y. ♦ Cho, J. H. ♦ Jia, Q. X.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ CALCIUM OXIDES ♦ STRONTIUM OXIDES ♦ RUTHENIUM OXIDES ♦ HUBBARD MODEL ♦ ELECTRON CORRELATION ♦ THIN FILMS ♦ OPTICAL PROPERTIES ♦ EXCITATION ♦ SCATTERING
Abstract We investigated optical properties of (Ca,Sr)RuO {sub 3} films on the borderline of a metal-insulator transition. Our results show all of the predicted characteristics for a metallic Mott-Hubbard system, including (i) a mass enhancement in dc limit, (ii) a U/2 excitation, and (iii) a U excitation. Also, self-consistency is exploited within the Gutzwiller-Brinkman-Rice picture for the Mott transition. Our finding displays that electron correlation should be important even in 4d materials. However, low frequency behaviors of electrodynamic quantities suggest extra scattering mechanisms in addition to the Mott-Hubbard correlation. {copyright} {ital 1999} {ital The American Physical Society }
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-06-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 82
Issue Number 26


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