Accurate Measurements of Electronic Heat Capacity by High-Speed Calorimetry Technique
| Project/Area Number |
26887004
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | Tohoku University |
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Principal Investigator |
Kihara Takumi 東北大学, 金属材料研究所, 助教 (80733021)
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| Project Period (FY) |
2014-08-29 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 比熱 / 極低温 / 核比熱 / 強磁場 / 強相関電子系 / 比熱測定 / 重い電子系 |
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| Outline of Final Research Achievements |
We developed a rapid caloric measurement system, which can measure a heat capacity within 0.1 second at low temperatures and high magnetic fields. At low temperatures, the paramagnetic nuclear spins contribute to the total heat capacity, which shows the slow thermal relaxation process. Therefore, the estimation of the electronic contribution to the heat capacity is difficult by the relaxation method. The rapid caloric measurements enable us to measure the heat capacity without the delayed contribution of the nuclear spins. We successfully performed the accurate measurements of the electronic heat capacity of copper at the low temperatures down to 0.6 K and the high magnetic fields up to 17.5 T.
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Report
(3 results)
Research Products
(1 results)
