| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
Metamagnetism in itinerant f-electron systems has been studied by means of low-temperature thermoelectric coefficients. In the heavy-fermion metamagnet YbCo2Zn20, the Seebeck coefficient is found to be gigantic, which is among the largest known for metals. An application of magnetic field gives rise to a dramatic reduction of the large Seebeck coefficient towards the metamagnetic field. In addition to a low Kondo energy scale, the presence of an extremely low energy scale possibly originated from antiferromagnetic correlation and its peculiar band dependence are likely sources of the enhanced thermoelectric responses. Moreover, a field collapse of such an intriguing correlation is intimately related to the metamagnetism.
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