Temperature-dependent valence-band photoemission spectra of La{sub 1{minus}x}Sr{sub x}MnO{sub 3}

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.8836· OSTI ID:632633

Saitoh, T; Sekiyama, A; Kobayashi, K; Mizokawa, T; Fujimori, A ^[1]; Sarma, D D ^[2]; Takeda, Y ^[3]; Takano, M ^[4]

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1. Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113 (Japan)
2. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)
3. Department of Chemistry, Faculty of Engineering, Mie University, Tsu 514 (Japan)
4. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611 (Japan)

We have studied the temperature dependence of the photoemission spectra of La{sub 1{minus}x}Sr{sub x}MnO{sub 3} (x=0.0, 0.2, and 0.4) and found that the spectral line shape dramatically changes in the entire valence-band region, particularly for x=0.2 and 0.4. By contrast, the spectra of La{sub 0.6}Sr{sub 0.4}CoO{sub 3} show no significant temperature dependence. From comparison between the temperature- and composition-(x) dependent spectral changes and the temperature-composition phase diagram of La{sub 1{minus}x}Sr{sub x}MnO{sub 3}, we suggest that the changes are related to the degree of hole localization on oxygen p orbitals, which is influenced by electron-lattice coupling and magnetic correlations. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 632633
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 14 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT OXIDES
ELECTRON-PHONON COUPLING
FERROMAGNETIC MATERIALS
HOLES
LANTHANUM OXIDES
LINE WIDTHS
MANGANESE OXIDES
PHASE DIAGRAMS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
STOICHIOMETRY
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
VALENCE