| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
We have performed the nuclear magnetic resonance (NMR) experiment on the thin film deposited on the surface of unconventional superconductors to study the superconducting proximity effect. We prepared the superconductor-metal junction with various film thicknesses, and measured the nuclear spin-lattice relaxation rate for each sample. As the result, we found the increase or decrease in relaxation rate below the superconducting transition temperature. This result proves that the superconductivity proximity effect on one layer of thin film can be detected by the NMR experiment. We also found that whether the relaxation rate increase or decrease depends on the film thickness. Namely, the increase in relaxation rate observed in a sample with thin layer addresses an exotic characteristic of unconventional superconductivity. Further detailed experiments to confirm this behavior is now in progress.
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