Research on spin-orbit interaction in 5d electron oxides by means of spin Hall effect
| Project/Area Number |
22340108
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
MATSUNO Jobu 独立行政法人理化学研究所, 高木磁性研究室, 専任研究員 (00443028)
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| Co-Investigator(Kenkyū-buntansha) |
FUKUMA Yasuhiro 独立行政法人理化学研究所, 量子ナノ磁性研究チーム, 客員研究員 (90513466)
FUJIWARA Kohei 独立行政法人理化学研究所, 高木磁性研究室, 基礎科学特別研究員 (50525855)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2011: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2010: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
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| Keywords | 強相関系 / スピン・軌道相互作用 / 5d電子系 / スピンホール効果 / スピントロニクス / ５ｄ電子系 / 強相関係 |
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| Research Abstract |
We detected inverse spin Hall effect of 5d transition-metal oxide IrO_2. Its spin Hall resistivity, defined as conversion efficiency from spin current to voltage, is about as ten times as the value of Pt, indicating that spin-orbit interaction is dominant in transport properties of 5d transition-metal oxides. The result demonstrates that these oxides are promising materials as a spin-current detector. We also found that artificial superlattices consisting of SrIrO_3 and SrTiO_3 belong to a novel type of a Mott insulator. We clarified that cooperation between electron correlation and spin-orbit interaction is affected by controlled dimensionality.
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Report
(4 results)
Research Products
(40 results)
