2010 Fiscal Year Final Research Report
Fabrication and control of strongly-correlated-electron nano-magnetic interfaces toward applications to novel magneto-electric devices
| Project/Area Number |
21750198
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Functional materials/Devices
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
YAMADA Hiroyuki National Institute of Advanced Industrial Science and Technology, エレクトロニクス研究部門, 研究員 (00415762)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 強相関エレクトロニクス / 人工超格子 / ヘテロ界面 / 電気磁気デバイス / ナノ材料 / 巨大磁気抵抗 / 酸化物エレクトロニクス / 電界効果 |
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| Research Abstract |
In this project, we explored electronic and magnetic functionalities at the interfaces of strongly-correlated-electron oxides. Particularly in the artificial superlattice composed of LaMnO_3 and SrMnO_3, we succeeded in preparing the unprecedentedly high-quality samples, leading to the discovery of colossal magneto-resistance which cannot be observed in bulk (La,Sr)MnO_3 samples. This phenomenon is attributed to the competing insulating and metallic states at the interface between the two materials. These findings are emergent phenomena characteristic of stronglycorrelated-electron systems, which plays an important role for development of new interface devices.
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