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double Weyl points 1first-principles calculations 1rotation symmetry 1topological materials 1z2 invariant 1

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1 paper

cond-mat.mtrl-sci2026

Rotation topological states: theory and material realization

Chun-Xue Liu, Yilin Han, Runze Li +2

The paper introduces a rotation‑subspace topological invariant (a Z₂ⁿ invariant) that reveals hidden topological phases in materials with rotational symmetry, and demonstrates its…