2013年11月
UPt3 as a Topological Crystalline Superconductor
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
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- 巻
- 82
- 号
- 11
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.7566/JPSJ.82.113707
- 出版者・発行元
- PHYSICAL SOC JAPAN
We investigate the topological aspect of the spin-triplet f-wave superconductor UPt3 through microscopic calculations of edge-and vortex-bound states based on the quasiclassical Eilenberger and Bogoliubov-de Gennes theories. It is shown that a gapless and linear dispersion exists at the edge of the ab-plane. This forms a Majorana valley, protected by the mirror chiral symmetry. We also demonstrate that, with increasing magnetic field, vortex-bound quasiparticles undergo a topological phase transition from topologically trivial states in the double-core vortex to zero-energy states in the normal-core vortex. As long as the d-vector is locked into the ab-plane, the mirror symmetry holds the Majorana property of the zero-energy states, and thus UPt3 preserves topological crystalline superconductivity that is robust against the crystal field and spin-orbit interaction.
- リンク情報
- ID情報
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- DOI : 10.7566/JPSJ.82.113707
- ISSN : 0031-9015
- Web of Science ID : WOS:000326402100002