Temperature-dependent resonant photoemission study of the metallic and charge-ordered phases of Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3}
Journal Article
·
· Physical Review, B: Condensed Matter
- Department of Physics, The Catholic University of Korea, Puchon 422-743 (Korea)
- Ames Laboratory, Iowa State University, Ames, Iowa 50011 (United States)
- Department of Physics and Center for Strongly Correlated Materials Research, Seoul National University, Seoul 151-742 (Korea)
- Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea)
A resonant photoemission study has been performed for Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3}thinsp(x=1/3,1/2) and the partial spectral weight (PSW) distributions of both Pr 4f and Mn 3d electrons have been determined. With varying temperature ({ital T}) and {ital x}, metal-insulator transitions are observed in the photoemission data. The Pr ions in Pr{sub 1{minus}x}Sr{sub x}MnO{sub 3} are trivalent, and Pr 4f PSW exhibits a dominant hybridization peak indicating large Pr 4f{minus}Othinsp2p mixing. The Mn 3d PSW at low {ital T} shows a charge gap for x=1/2, and a reduced spectral intensity near E{sub F} for x=1/3, suggesting the localized nature due to the lattice polaron formation. thinsp {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 690742
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 19 Vol. 60; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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