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Fermi-cylinder

This system undergoes a quantum phase transition from a Hopf-Chern insulator with ( χ = 2, (C1 = 2 , C2 = 0 , C3 = 0)) to another insulator with (χ = 0 , (C1 = 2 , C2 = 0 , C3 = 0)

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Hopf Semimetals

cond-mat.mes-hall · 2023-09-25 · unverdicted · novelty 7.0

Hopf semimetals are 4D gapless phases constructed via unstable homotopy maps from T^3 to S^2 that host nodal lines carrying Hopf flux along with unique gapless Fermi-arc, drumhead, Fermi-surface, and corner states.

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  • Hopf Semimetals cond-mat.mes-hall · 2023-09-25 · unverdicted · none · ref 1

    Hopf semimetals are 4D gapless phases constructed via unstable homotopy maps from T^3 to S^2 that host nodal lines carrying Hopf flux along with unique gapless Fermi-arc, drumhead, Fermi-surface, and corner states.