most citedThe Classification of Dimensional Reduced Hopf Insulators

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cond-mat.mes-hall2014★ 2 cited

The Classification of Dimensional Reduced Hopf Insulators

Chang-Yan Wang, Yan He

The Hopf insulators are characterized by a topological invariant called Hopf index which classifies maps from three-sphere to two-sphere, instead of a Chern number or a Chern parit…