Higher-order topological semimetals and nodal superconductors with an order-two crystalline symmetry
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Dokumenter
- PhysRevB.106.035105
Forlagets udgivne version, 1,39 MB, PDF-dokument
Using a systematic relation between topological gapless phases in three dimensions and topological gapped phases in two dimensions, we identify four types of higher-order topological semimetals or nodal superconductors (HOTS), hosting (i) flat zero-energy ???Fermi arcs??? at crystal hinges, (ii) flat zero-energy hinge arcs coexisting with surface Dirac cones, (iii) chiral or helical hinge modes, or (iv) flat zero-energy hinge arcs connecting nodes only at finite momentum. Bulk-boundary correspondence relates the hinge states to the bulk topology protecting the nodal point or loop. We classify all HOTS for all tenfold-way classes with an order-two crystalline (anti)symmetry, such as mirror, twofold rotation, or inversion.
Originalsprog | Engelsk |
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Artikelnummer | 035105 |
Tidsskrift | Physical Review B |
Vol/bind | 106 |
Udgave nummer | 3 |
Antal sider | 16 |
ISSN | 2469-9950 |
DOI | |
Status | Udgivet - 5 jul. 2022 |
Links
- https://arxiv.org/pdf/2109.02664.pdf
Indsendt manuskript
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