Spectral evidence for inherent "dead layer" formation at La 1-ySryFeO3/La1-xSr xMnO3 heterointerface

R. Hashimoto; A. Chikamatsu; H. Kumigashira; M. Oshima; N. Nakagawa; T. Ohnishi; M. Lippmaa; H. Wadati; A. Fujimori; K. Ono; M. Kawasaki; H. Koinuma

doi:10.1016/j.elspec.2005.01.081

Spectral evidence for inherent "dead layer" formation at La _1-ySr_yFeO₃/La_1-xSr _xMnO₃ heterointerface

R. Hashimoto, A. Chikamatsu, H. Kumigashira, M. Oshima, N. Nakagawa, T. Ohnishi, M. Lippmaa, H. Wadati, A. Fujimori, K. Ono, M. Kawasaki, H. Koinuma

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

8 Citations (Scopus)

Abstract

We have investigated the electronic structure of a La_0.6Sr _0.4FeO₃ (LSFO)/La_0.6Sr_0.4MnO ₃ (LSMO) heterointerface using Mn 2p-3d resonant photoemission spectroscopy and X-ray absorption spectroscopy. We have found that the spectral intensity of e_g↑ states near the Fermi level is gradually reduced with increasing LSFO overlayer thickness. The spectral behavior is quite similar to that of hole-doped LSMO films, indicating hole-doping in LSMO layers. We have also found that Fe 2p X-ray absorption spectrum of a LSMO/LSFO/LSMO trilayer shows the spectral evidence for electron doping in the corresponding LSFO layer. These results indicate the occurrence of charge transfer at interfaces between LSMO and LSFO layers.

Original language	English
Pages (from-to)	479-481
Number of pages	3
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.081
Publication status	Published - 2005 Jun
Externally published	Yes

Keywords

Charge transfer
LaSrMnO
Laser-MBE
Photoemission spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.elspec.2005.01.081

Cite this

Hashimoto, R., Chikamatsu, A., Kumigashira, H., Oshima, M., Nakagawa, N., Ohnishi, T., Lippmaa, M., Wadati, H., Fujimori, A., Ono, K., Kawasaki, M., & Koinuma, H. (2005). Spectral evidence for inherent "dead layer" formation at La _1-ySr_yFeO₃/La_1-xSr _xMnO₃ heterointerface. Journal of Electron Spectroscopy and Related Phenomena, 144-147, 479-481. https://doi.org/10.1016/j.elspec.2005.01.081

Spectral evidence for inherent "dead layer" formation at La _1-ySr_yFeO₃/La_1-xSr _xMnO₃ heterointerface. / Hashimoto, R.; Chikamatsu, A.; Kumigashira, H.; Oshima, M.; Nakagawa, N.; Ohnishi, T.; Lippmaa, M.; Wadati, H.; Fujimori, A.; Ono, K.; Kawasaki, M.; Koinuma, H.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 144-147, 06.2005, p. 479-481.

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

Hashimoto, R, Chikamatsu, A, Kumigashira, H, Oshima, M, Nakagawa, N, Ohnishi, T, Lippmaa, M, Wadati, H, Fujimori, A, Ono, K, Kawasaki, M & Koinuma, H 2005, 'Spectral evidence for inherent "dead layer" formation at La _1-ySr_yFeO₃/La_1-xSr _xMnO₃ heterointerface', Journal of Electron Spectroscopy and Related Phenomena, vol. 144-147, pp. 479-481. https://doi.org/10.1016/j.elspec.2005.01.081

Hashimoto, R. ; Chikamatsu, A. ; Kumigashira, H. ; Oshima, M. ; Nakagawa, N. ; Ohnishi, T. ; Lippmaa, M. ; Wadati, H. ; Fujimori, A. ; Ono, K. ; Kawasaki, M. ; Koinuma, H. / Spectral evidence for inherent "dead layer" formation at La _1-ySr_yFeO₃/La_1-xSr _xMnO₃ heterointerface. In: Journal of Electron Spectroscopy and Related Phenomena. 2005 ; Vol. 144-147. pp. 479-481.

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title = "Spectral evidence for inherent {"}dead layer{"} formation at La 1-ySryFeO3/La1-xSr xMnO3 heterointerface",

abstract = "We have investigated the electronic structure of a La0.6Sr 0.4FeO3 (LSFO)/La0.6Sr0.4MnO 3 (LSMO) heterointerface using Mn 2p-3d resonant photoemission spectroscopy and X-ray absorption spectroscopy. We have found that the spectral intensity of eg↑ states near the Fermi level is gradually reduced with increasing LSFO overlayer thickness. The spectral behavior is quite similar to that of hole-doped LSMO films, indicating hole-doping in LSMO layers. We have also found that Fe 2p X-ray absorption spectrum of a LSMO/LSFO/LSMO trilayer shows the spectral evidence for electron doping in the corresponding LSFO layer. These results indicate the occurrence of charge transfer at interfaces between LSMO and LSFO layers.",

keywords = "Charge transfer, LaSrMnO, Laser-MBE, Photoemission spectroscopy",

author = "R. Hashimoto and A. Chikamatsu and H. Kumigashira and M. Oshima and N. Nakagawa and T. Ohnishi and M. Lippmaa and H. Wadati and A. Fujimori and K. Ono and M. Kawasaki and H. Koinuma",

note = "Funding Information: This work was done under Project No. 02S2-002 at the Institute of Materials Structure Science at KEK and supported by a Grant-in-Aid for Scientific Research (A16204024) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

year = "2005",

month = jun,

doi = "10.1016/j.elspec.2005.01.081",

language = "English",

volume = "144-147",

pages = "479--481",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

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T1 - Spectral evidence for inherent "dead layer" formation at La 1-ySryFeO3/La1-xSr xMnO3 heterointerface

AU - Hashimoto, R.

AU - Chikamatsu, A.

AU - Kumigashira, H.

AU - Oshima, M.

AU - Nakagawa, N.

AU - Ohnishi, T.

AU - Lippmaa, M.

AU - Wadati, H.

AU - Fujimori, A.

AU - Ono, K.

AU - Kawasaki, M.

AU - Koinuma, H.

N1 - Funding Information: This work was done under Project No. 02S2-002 at the Institute of Materials Structure Science at KEK and supported by a Grant-in-Aid for Scientific Research (A16204024) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2005/6

Y1 - 2005/6

N2 - We have investigated the electronic structure of a La0.6Sr 0.4FeO3 (LSFO)/La0.6Sr0.4MnO 3 (LSMO) heterointerface using Mn 2p-3d resonant photoemission spectroscopy and X-ray absorption spectroscopy. We have found that the spectral intensity of eg↑ states near the Fermi level is gradually reduced with increasing LSFO overlayer thickness. The spectral behavior is quite similar to that of hole-doped LSMO films, indicating hole-doping in LSMO layers. We have also found that Fe 2p X-ray absorption spectrum of a LSMO/LSFO/LSMO trilayer shows the spectral evidence for electron doping in the corresponding LSFO layer. These results indicate the occurrence of charge transfer at interfaces between LSMO and LSFO layers.

AB - We have investigated the electronic structure of a La0.6Sr 0.4FeO3 (LSFO)/La0.6Sr0.4MnO 3 (LSMO) heterointerface using Mn 2p-3d resonant photoemission spectroscopy and X-ray absorption spectroscopy. We have found that the spectral intensity of eg↑ states near the Fermi level is gradually reduced with increasing LSFO overlayer thickness. The spectral behavior is quite similar to that of hole-doped LSMO films, indicating hole-doping in LSMO layers. We have also found that Fe 2p X-ray absorption spectrum of a LSMO/LSFO/LSMO trilayer shows the spectral evidence for electron doping in the corresponding LSFO layer. These results indicate the occurrence of charge transfer at interfaces between LSMO and LSFO layers.

KW - Charge transfer

KW - LaSrMnO

KW - Laser-MBE

KW - Photoemission spectroscopy

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