2010 Fiscal Year Final Research Report
Studies on quantum and frustrated spin systems by ultra-low temperature high-field multi-frequency ESR
| Project/Area Number |
20340089
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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 | Osaka University |
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Principal Investigator |
HAGIWARA Wasayuki Osaka University, 極限量子科学研究センター, 教授 (10221491)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 磁気共鳴 / 極低温 / 強磁場 / 多周波数 / 量子磁性体 / フラストレート磁性体 |
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| Research Abstract |
We have developed high magnetic field multi-frequency electron spin resonance (ESR) apparatuses that can measure down to 0.1K in a static magnetic field and down to 0.6K in a pulsed magnetic field to study two kinds of magnets with remarkable quantum effects and competing exchange interactions. We have found novel ESR signals above a critical field where the energy gap vanishes which were not observed at the temperatures down to 1.3K for the former, and the shift of an ESR resonance field for the latter.
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