Strong localization of doped holes in La1-x Srx FeO3 from angle-resolved photoemission spectra

H. Wadati; A. Chikamatsu; M. Takizawa; R. Hashimoto; H. Kumigashira; T. Yoshida; T. Mizokawa; A. Fujimori; M. Oshima; M. Lippmaa; M. Kawasaki; H. Koinuma

doi:10.1103/PhysRevB.74.115114

Strong localization of doped holes in La1-x Srx FeO3 from angle-resolved photoemission spectra

H. Wadati^*, A. Chikamatsu, M. Takizawa, R. Hashimoto, H. Kumigashira, T. Yoshida, T. Mizokawa, A. Fujimori, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

We have performed an angle-resolved photoemission spectroscopy study of La0.6 Sr0.4 FeO3 using in situ prepared thin films and determined its band structure. The experimental band dispersions could be well explained by an empirical band structure assuming the G -type antiferromagnetic state. However, the Fe 3d bands were found to be shifted downward relative to the Fermi level (EF) by ∼1 eV compared with the calculation and to form a gap of ∼1 eV at EF. We attribute this observation to a strong localization effect of doped holes due to polaron formation.

Original language	English
Article number	115114
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	74
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.74.115114
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.74.115114

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Wadati, H., Chikamatsu, A., Takizawa, M., Hashimoto, R., Kumigashira, H., Yoshida, T., Mizokawa, T., Fujimori, A., Oshima, M., Lippmaa, M., Kawasaki, M., & Koinuma, H. (2006). Strong localization of doped holes in La1-x Srx FeO3 from angle-resolved photoemission spectra. Physical Review B - Condensed Matter and Materials Physics, 74(11), Article 115114. https://doi.org/10.1103/PhysRevB.74.115114

Wadati, H, Chikamatsu, A, Takizawa, M, Hashimoto, R, Kumigashira, H, Yoshida, T, Mizokawa, T, Fujimori, A, Oshima, M, Lippmaa, M, Kawasaki, M & Koinuma, H 2006, 'Strong localization of doped holes in La1-x Srx FeO3 from angle-resolved photoemission spectra', Physical Review B - Condensed Matter and Materials Physics, vol. 74, no. 11, 115114. https://doi.org/10.1103/PhysRevB.74.115114

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abstract = "We have performed an angle-resolved photoemission spectroscopy study of La0.6 Sr0.4 FeO3 using in situ prepared thin films and determined its band structure. The experimental band dispersions could be well explained by an empirical band structure assuming the G -type antiferromagnetic state. However, the Fe 3d bands were found to be shifted downward relative to the Fermi level (EF) by ∼1 eV compared with the calculation and to form a gap of ∼1 eV at EF. We attribute this observation to a strong localization effect of doped holes due to polaron formation.",

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T1 - Strong localization of doped holes in La1-x Srx FeO3 from angle-resolved photoemission spectra

AU - Wadati, H.

AU - Chikamatsu, A.

AU - Takizawa, M.

AU - Hashimoto, R.

AU - Kumigashira, H.

AU - Yoshida, T.

AU - Mizokawa, T.

AU - Fujimori, A.

AU - Oshima, M.

AU - Lippmaa, M.

AU - Kawasaki, M.

AU - Koinuma, H.

PY - 2006

Y1 - 2006

N2 - We have performed an angle-resolved photoemission spectroscopy study of La0.6 Sr0.4 FeO3 using in situ prepared thin films and determined its band structure. The experimental band dispersions could be well explained by an empirical band structure assuming the G -type antiferromagnetic state. However, the Fe 3d bands were found to be shifted downward relative to the Fermi level (EF) by ∼1 eV compared with the calculation and to form a gap of ∼1 eV at EF. We attribute this observation to a strong localization effect of doped holes due to polaron formation.

AB - We have performed an angle-resolved photoemission spectroscopy study of La0.6 Sr0.4 FeO3 using in situ prepared thin films and determined its band structure. The experimental band dispersions could be well explained by an empirical band structure assuming the G -type antiferromagnetic state. However, the Fe 3d bands were found to be shifted downward relative to the Fermi level (EF) by ∼1 eV compared with the calculation and to form a gap of ∼1 eV at EF. We attribute this observation to a strong localization effect of doped holes due to polaron formation.

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Strong localization of doped holes in La1-x Srx FeO3 from angle-resolved photoemission spectra

Abstract

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