In situ photoemission study of La1-xSrxFeO 3 epitaxial thin films

H. Wadati; D. Kobayashi; A. Chikamatsu; R. Hashimoto; M. Takizawa; K. Horiba; H. Kumigashira; Takashi Mizokawa; A. Fujimori; M. Oshima; M. Lippmaa; M. Kawasaki; H. Koinuma

doi:10.1016/j.elspec.2005.01.166

In situ photoemission study of La_1-xSr_xFeO ₃ epitaxial thin films

H. Wadati, D. Kobayashi, A. Chikamatsu, R. Hashimoto, M. Takizawa, K. Horiba, H. Kumigashira, Takashi Mizokawa, A. Fujimori, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

Research output: Contribution to journal › Article

11 Citations (Scopus)

Abstract

We have performed in situ photoemission and O 1s X-ray absorption studies of La_1-xSr_xFeO₃ (0≤x≤0.67) epitaxial thin films grown by laser molecular beam epitaxy. We found that hole doping induces spectral weight transfer from below the Fermi level to above it across the gap in a highly non-rigid-band-like manner. We also observed the temperature dependence on the spectra of the x=0.67 sample, which shows a charge disproportionation at 190 K. With decreasing temperature, we observed gradual changes of the spectra with spectral weight transfer primarily within the e _g band.

Original language	English
Pages (from-to)	877-880
Number of pages	4
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.166
Publication status	Published - 2005 Jun
Externally published	Yes

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Keywords

LaSrFeO
Laser MBE
Photoemission spectroscopy
Thin films

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Spectroscopy
Atomic and Molecular Physics, and Optics
Surfaces and Interfaces

Cite this

Wadati, H., Kobayashi, D., Chikamatsu, A., Hashimoto, R., Takizawa, M., Horiba, K., Kumigashira, H., Mizokawa, T., Fujimori, A., Oshima, M., Lippmaa, M., Kawasaki, M., & Koinuma, H. (2005). In situ photoemission study of La_1-xSr_xFeO ₃ epitaxial thin films. Journal of Electron Spectroscopy and Related Phenomena, 144-147, 877-880. https://doi.org/10.1016/j.elspec.2005.01.166

In situ photoemission study of La_1-xSr_xFeO ₃ epitaxial thin films. / Wadati, H.; Kobayashi, D.; Chikamatsu, A.; Hashimoto, R.; Takizawa, M.; Horiba, K.; Kumigashira, H.; Mizokawa, Takashi; Fujimori, A.; Oshima, M.; Lippmaa, M.; Kawasaki, M.; Koinuma, H.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 144-147, 06.2005, p. 877-880.

Research output: Contribution to journal › Article

Wadati, H, Kobayashi, D, Chikamatsu, A, Hashimoto, R, Takizawa, M, Horiba, K, Kumigashira, H, Mizokawa, T, Fujimori, A, Oshima, M, Lippmaa, M, Kawasaki, M & Koinuma, H 2005, 'In situ photoemission study of La_1-xSr_xFeO ₃ epitaxial thin films', Journal of Electron Spectroscopy and Related Phenomena, vol. 144-147, pp. 877-880. https://doi.org/10.1016/j.elspec.2005.01.166

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abstract = "We have performed in situ photoemission and O 1s X-ray absorption studies of La1-xSrxFeO3 (0≤x≤0.67) epitaxial thin films grown by laser molecular beam epitaxy. We found that hole doping induces spectral weight transfer from below the Fermi level to above it across the gap in a highly non-rigid-band-like manner. We also observed the temperature dependence on the spectra of the x=0.67 sample, which shows a charge disproportionation at 190 K. With decreasing temperature, we observed gradual changes of the spectra with spectral weight transfer primarily within the e g band.",

keywords = "LaSrFeO, Laser MBE, Photoemission spectroscopy, Thin films",

author = "H. Wadati and D. Kobayashi and A. Chikamatsu and R. Hashimoto and M. Takizawa and K. Horiba and H. Kumigashira and Takashi Mizokawa and A. Fujimori and M. Oshima and M. Lippmaa and M. Kawasaki and H. Koinuma",

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AU - Chikamatsu, A.

AU - Hashimoto, R.

AU - Takizawa, M.

AU - Horiba, K.

AU - Kumigashira, H.

AU - Mizokawa, Takashi

AU - Fujimori, A.

AU - Oshima, M.

AU - Lippmaa, M.

AU - Kawasaki, M.

AU - Koinuma, H.

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AB - We have performed in situ photoemission and O 1s X-ray absorption studies of La1-xSrxFeO3 (0≤x≤0.67) epitaxial thin films grown by laser molecular beam epitaxy. We found that hole doping induces spectral weight transfer from below the Fermi level to above it across the gap in a highly non-rigid-band-like manner. We also observed the temperature dependence on the spectra of the x=0.67 sample, which shows a charge disproportionation at 190 K. With decreasing temperature, we observed gradual changes of the spectra with spectral weight transfer primarily within the e g band.

KW - LaSrFeO

KW - Laser MBE

KW - Photoemission spectroscopy

KW - Thin films

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10.1016/j.elspec.2005.01.166