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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Finite current flux fragilizes the two-mode topological phase in a Kitaev ladder, shown via bulk invariants and edge-edge quantum conditional mutual information.
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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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Current-driven reduction of topological protection in multichannel superconductors
Finite current flux fragilizes the two-mode topological phase in a Kitaev ladder, shown via bulk invariants and edge-edge quantum conditional mutual information.