2016年4月1日
Tuning magnetic anisotropy by interfacially engineering the oxygen coordination environment in a transition metal oxide
Nature Materials
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- 巻
- 15
- 号
- 4
- 開始ページ
- 432
- 終了ページ
- 437
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/nmat4580
- 出版者・発行元
- Nature Publishing Group
Strong correlations between electrons, spins and lattices - stemming from strong hybridization between transition metal d and oxygen p orbitals - are responsible for the functional properties of transition metal oxides. Artificial oxide heterostructures with chemically abrupt interfaces provide a platform for engineering bonding geometries that lead to emergent phenomena. Here we demonstrate the control of the oxygen coordination environment of the perovskite, SrRuO3, by heterostructuring it with Ca0.5Sr0.5TiO3 (0-4 monolayers thick) grown on a GdScO3 substrate. We found that a Ru-O-Ti bond angle of the SrRuO3/Ca0.5Sr0.5TiO3 interface can be engineered by layer-by-layer control of the Ca0.5Sr0.5TiO3 layer thickness, and that the engineered Ru-O-Ti bond angle not only stabilizes a Ru-O-Ru bond angle never seen in bulk SrRuO3, but also tunes the magnetic anisotropy in the entire SrRuO3 layer. The results demonstrate that interface engineering of the oxygen coordination environment allows one to control additional degrees of freedom in functional oxide heterostructures.
- リンク情報
- ID情報
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- DOI : 10.1038/nmat4580
- ISSN : 1476-4660
- ISSN : 1476-1122
- SCOPUS ID : 84960192683