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2023-01-16T04:12:43Z
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Topologically stable gapless phases in nonsymmorphic superconductors
Kobayashi, Shingo
68542
Yanase, Youichi
68543
Sato, Masatoshi
68544
We study the topological stability of nodes in nonsymmorphic superconductors (SCs). In particular, we demonstrate that line nodes in nonsymmorphic odd-parity SCs are protected by the interplay between topology and nonsymmorphic symmetry. As an example, it is shown that the E2u-superconducting state of UPt3 hosts the topologically stable line node at the Brillouin zone face. Our theory indicates that the existence of spin-orbit coupling is essential for protecting such a line node, complementing Norman's group theory argument. Developing the topological arguments, we also propose a generalization to point nodes and to other symmetry cases beyond the group theory arguments.
journal article
American Physical Society
2016-10-14
application/pdf
Physical Review B
94
134512
134512
https://doi.org/10.1103/PhysRevB.94.134512
http://hdl.handle.net/2237/25319
2469-9950
https://nagoya.repo.nii.ac.jp/record/23125/files/PhysRevB_94_134512.pdf
eng
https://doi.org/10.1103/PhysRevB.94.134512
© 2016 American Physical Society