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

研究成果: Article査読

8 被引用数 (Scopus)


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.

ジャーナルJournal of Electron Spectroscopy and Related Phenomena
出版ステータスPublished - 2005 6月

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


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