Studies on quantum and frustrated spin systems by ultra-low temperature high-field multi-frequency ESR
Project/Area Number |
20340089
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Condensed matter physics II
|
Research Institution | Osaka University |
Principal Investigator |
HAGIWARA Wasayuki Osaka University, 極限量子科学研究センター, 教授 (10221491)
|
Project Period (FY) |
2008 – 2010
|
Project Status |
Completed (Fiscal Year 2010)
|
Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2010: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2009: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2008: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
|
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 / ダイリューション冷凍機 / 極低温ESR / 擬一次元反強磁性体 / 量子スピン系 / フラストレーション系 |
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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Report
(4 results)
Research Products
(40 results)