2015 Fiscal Year Final Research Report
Microscopic theory for the nonequilibrium dynamics of the topological superfluid 3He
| Project/Area Number |
25800199
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | Osaka University (2014-2015)
Okayama University (2013) |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | トポロジカル超伝導 / 超流動 / マヨラナ粒子 |
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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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| Free Research Field |
物性理論
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