| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Fiscal Year 2010: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
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| Research Abstract |
Odd-frequency pairing is a exotic state where Cooper pair changes its sign with the exchange of times of two electrons. We have clarified anomalous surface impedance of spin-triplet superconductor junctions, anomalous Meissner effect in ferromagnet / superconductor junctions and relevance of anomalous Majorana fermion and odd-frequency pairing. In the experimental works, spin-triplet superconductor junctions have been made. Tunneling spectroscopy has been performed on junctions made from spin-triplet superconductor Sr2RuO4 searching for the edge states peculiar to topological superconductivity. By comparing the experiments with predictions forunconventional superconductivity, these varieties are shown to originate from multiband chiral p-wave symmetry with weak anisotropy of pair amplitude. The broad hump in the conductance spectrum is a direct manifestation of the edge state due to chiral p-wave superconductivity. Also, T shaped proximity coupled superconductor has been made from Sr2RuO4.
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