| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
In this work, we theoretically investigated the interplay of symmetry and topology in unconventional superconductors and superfluids. We here unveiled the emergence of low-energy quasiparticles which possess nontrivial properties attributed to the symmetry and topology. In particular, Majorana fermions which are hallmark of nontrivial topology appear in the heavy-fermion superconductor UPt3 and the superconducting topological insulator CuxBi2Se3. It was shown that the intertwining of symmetry and topology attributed to the unconventional gap functions brings about anomalous magnetic response and Cooper pair correlation of the Majorana fermions. Furthermore, we demonstrated that the most prommissing candidate of the gap function in CuxBi2Se3 is an odd-parity topological state, which well explains recent experimental results.
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