2009 Fiscal Year Final Research Report
Magnetism of quantum crystal and crystal growth control
| Project/Area Number |
17071004
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
OKUDA Yuichi The University of Tokyo, 大学院・理工学研究科, 教授 (50135670)
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Yutaka 京都大学, 低温物質科学研究センター, 准教授 (60205870)
YAMAGUCHI Akira 兵庫県立大学, 大学院・物質理学研究科, 准教授 (10302639)
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| Project Period (FY) |
2005 – 2009
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| Keywords | 量子固体 / 多体交換 / フラストレーション / 低次元 / スピン液体 / 超流動 / NMR,結晶成長 |
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| Research Abstract |
The magnetization curve for two dimensional 3He on a triangular lattice was obtained at 1 mK, revealing a 1/2 plateau at 1.2-2.2 T and a shoulder at 2.5 T. To understand them the multiple spin exchange parameters are essential but it was found up to 6 bodies exchange parameters are not enough to explain the results. NMR signal from very dilute 3He atoms solved in solid 4He was successfully detected and it was found that 3He forms a small stable cluster. The growth mechanism of solid 4He in the porous aerogel was found due to a nucleation.
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