| Project/Area Number |
21760032
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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 |
Thin film/Surface and interfacial physical properties
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
NAKAMURA Masao The Institute of Physical and Chemical Research, 交差相関超構造研究チーム, 基幹研究所研究員 (50525780)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 人工超格子 / ヘテロ構造 / 巨大磁気抵抗効果 / 電荷整列 / 相分離構造 / 相競合 / 外場応答性 / 酸化物薄膜 / 電荷軌道整列 / 相分離 / 磁性 / 電子相関 / 界面 |
|---|
| Research Abstract |
Artificial superlattices composed of two perovskite-type manganites with slightly different chemical compositions were fabricated by depositing each composition alternatively in a nanometer-scale. The two compositions have contrastive electronic phases, a ferromagnetic-metal and antiferromagnetic- insulator. It was revealed that the superlattices are in phase-coexisting state from transport and magnetic properties, optical spectra, and results of synchrotron x-ray diffraction. The resistivity and magnetization of the superlattice could be continuously tuned by a magnetic field or electric field as a result of the displacement of the electronic phase boundaries by the external fields.
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