Surface states in 3D class-CI topological lattice models are fragile to Anderson localization via trivializing proximity effect with weak disorder, while continuum Dirac models show disorder-induced healing of criticality.
This points to a fundamental incompleteness of the 2D continuum Dirac equation for describing topologi- cal surface states
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Topological surface-state destruction via trivializing proximity effect: Lattice localization despite continuum criticality
Surface states in 3D class-CI topological lattice models are fragile to Anderson localization via trivializing proximity effect with weak disorder, while continuum Dirac models show disorder-induced healing of criticality.