Termination geometry in a 2D nonsymmorphic antiferromagnet switches a single bulk phase between first-order gapless edge states and second-order corner states protected by magnetic mirror and chiral symmetries.
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6 Pith papers cite this work. Polarity classification is still indexing.
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Uniaxial strain and obliquely incident circularly polarized light stabilize a Floquet second-order topological insulator in graphene featuring gapped edges and robust corner modes.
A 3D array of coupled Rashba nanowires forms a helical second-order topological superconductor with gapless helical Z_{2q} parafermionic modes localized on hinges.
Epitaxial bilayer bismuth on EuO(111) forms a stabilized alpha-phase bismuthene with a robust 400 meV gap and boundary-localized states consistent with a room-temperature quantum spin Hall phase.
Z2-protected Majorana vortex end modes appear in time-reversal invariant higher-order topological insulators and in topologically trivial insulators with all surfaces gapped when chemical potential lies between the two single-TI critical values.
This is a review summarizing existing extensions of the SSH model to higher dimensions, larger unit cells, and additional terms, with case studies of their topological properties.
citing papers explorer
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Hybrid-order topology in two-dimensional nonsymmorphic antiferromagnets
Termination geometry in a 2D nonsymmorphic antiferromagnet switches a single bulk phase between first-order gapless edge states and second-order corner states protected by magnetic mirror and chiral symmetries.
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Floquet second-order topological insulator in strained graphene
Uniaxial strain and obliquely incident circularly polarized light stabilize a Floquet second-order topological insulator in graphene featuring gapped edges and robust corner modes.
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$\mathbb Z_{2q}$ parafermionic hinge states in a three-dimensional array of coupled nanowires
A 3D array of coupled Rashba nanowires forms a helical second-order topological superconductor with gapless helical Z_{2q} parafermionic modes localized on hinges.
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Bismuth Films on EuO(111) as a Platform for Proximity-Induced Topological States
Epitaxial bilayer bismuth on EuO(111) forms a stabilized alpha-phase bismuthene with a robust 400 meV gap and boundary-localized states consistent with a room-temperature quantum spin Hall phase.
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Majorana vortex phases in time-reversal invariant higher-order topological insulators and topologically trivial insulators
Z2-protected Majorana vortex end modes appear in time-reversal invariant higher-order topological insulators and in topologically trivial insulators with all surfaces gapped when chemical potential lies between the two single-TI critical values.
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Exploring topological phases with extended Su-Schrieffer-Heeger models
This is a review summarizing existing extensions of the SSH model to higher dimensions, larger unit cells, and additional terms, with case studies of their topological properties.