| Project/Area Number |
22540323
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 I
|
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| Research Institution | Hokkaido University |
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Principal Investigator |
TSUJIMI Yuhji 北海道大学, 電子科学研究所, 准教授 (20113673)
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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 |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2012: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2011: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2010: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Keywords | チタン酸ストロンチウム / 光散乱 / 量子常誘電体 / 量子臨界点 / 一軸性圧力 / 時空間スケーリング / SrTiO3 / 量子常誘電状態 / 量子強誘電状態 / ブロード・ダブレット / SrTiO_3 |
|---|
| Research Abstract |
SrTiO3 (Strontium titanatee) changes its crystal structure, when the uniaxial stress is applied. From the corrective atomic vibrations’ view points, we clarify the reason why this change occurs. On the other hand, it has been reported that the second-sound (produced by the phenomenon that “heat” transfers like “wave”) exists in this material. When we applied the uniaxial stress, the characteristic feature that is not allowed for the second-sound appears. This means that the second-sound does “not” exist. These results may help to present the basic concept for developing a new small capacitor, and may contribute, for example, to the weight saving of smart-phone.
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