Topological Quantum Spin Hall Semimetals with Light - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2024

Topological Quantum Spin Hall Semimetals with Light

Résumé

We introduce a quantum spin Hall semimetal or Fermi liquid characterized with a Z2 topological invariant, measurable through circularly polarized light. We propose its engineering through two topological metallic band structures in crystals on the honeycomb lattice, with spin-orbit interaction, realizable through the interplay of a charge or spin density wave substrate and Zeeman effects, in between a quantum spin Hall and a quantum anomalous Hall insulator. These systems show topologically protected helical edge or photo-induced currents.

Dates et versions

hal-04846650 , version 1 (18-12-2024)

Identifiants

Citer

Karyn Le Hur. Topological Quantum Spin Hall Semimetals with Light. 2024. ⟨hal-04846650⟩
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