Orbital reconstruction and interface ferromagnetism in self-assembled nanosheet superlattices

Minoru Osada*, Takayoshi Sasaki, Kanta Ono, Yoshinori Kotani, Shigenori Ueda, Keisuke Kobayashi

*この研究の対応する著者

研究成果: Article査読

37 被引用数 (Scopus)

抄録

We have investigated the interface electronic states in self-assembled (Ti0.8Co0.2O2/Ti0.6Fe 0.4O2)n superlattices by X-ray photoelectron spectroscopy. A charge of about -0.3 electron is transferred from Fe to Co ions across the interface and induces a major reconstruction of the orbital occupation at the interfacial (Ti0.8Co0.2O 2/Ti0.6Fe0.4O2) layers. Supported by first-principles calculations, the Co3+ state is partially occupied at the interface by superlattice formation, and this new magnetic state directly influences the coupling between Ti0.8Co0.2O2 and Ti0.6Fe0.4O2 nanosheets. These data indicate that the orbital reconstruction is indeed realized by the interface charge transfer between Co and Fe ions in the adjoined nanosheets, and the generic feature of engineered interfaces can be extended to self-assembled superlattices of oxide nanosheets.

本文言語English
ページ(範囲)6871-6879
ページ数9
ジャーナルACS Nano
5
9
DOI
出版ステータスPublished - 2011 9月 27
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 材料科学(全般)
  • 物理学および天文学(全般)

フィンガープリント

「Orbital reconstruction and interface ferromagnetism in self-assembled nanosheet superlattices」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル