| Budget Amount *help |
¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Fiscal Year 2015: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
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| Outline of Final Research Achievements |
Towards the realization of high temperature superconductivity, we have performed an electric field control of surface conductivity in diamond and related materials such as silicon. We accumulated high density carriers and obtained a metallic carrier transport on the hydrogen-terminated surface of non-doped diamond using an ionic-liquid-gated electric field effect. Furthermore, we observed quantum oscillations (Shubnikov-de Haas oscillations) in diamond for the first time through the preparation of atomically flat hydrogen-terminated (111) diamond surfaces. We also found that the transport properties depend significantly on the surface crystal orientation; in particular, we found a spin-induced anomalous magnetoresistance effect for the hydrogen-terminated (100) surface of diamond.
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