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

研究成果: Article › 査読

8 被引用数 (Scopus)

抄録

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.

本文言語	English
ページ（範囲）	479-481
ページ数	3
ジャーナル	Journal of Electron Spectroscopy and Related Phenomena
巻	144-147
DOI	https://doi.org/10.1016/j.elspec.2005.01.081
出版ステータス	Published - 2005 6月
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
放射線
原子分子物理学および光学
凝縮系物理学
分光学
物理化学および理論化学

文献へのアクセス

10.1016/j.elspec.2005.01.081

他のファイルとリンク

引用スタイル

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

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

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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",

issn = "0368-2048",

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TY - JOUR

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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