Topologically stable gapless phases in nonsymmorphic superconductors

• Kobayashi, Shingo

• Yanase, Youichi

• Sato, Masatoshi

Abstract

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

• Physical Review B

  Physical Review B 94 134512-134512, 2016-10-14

  American Physical Society

Details

• CRID: 1050282813782374016
• NII Article ID: 120005905584
• DOI: 10.1103/physrevb.94.134512
• ISSN: 24699969
• ISSN: 24699950
• HANDLE: 2237/25319
• Web Site: https://nagoya.repo.nii.ac.jp/records/23125
• Web Site: http://link.aps.org/accepted/10.1103/PhysRevB.94.134512
• Web Site: http://link.aps.org/article/10.1103/PhysRevB.94.134512
• Web Site: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.94.134512/fulltext
• Text Lang: en
• Article Type: journal article
• Data Source:
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  • CiNii Articles
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