Topological Anderson Insulator

Abstract

Disorder plays an important role in two dimensions, and is responsible for striking phenomena such as metal insulator transition and the integral and fractional quantum Hall effects. In this paper, we investigate the role of disorder in the context of the recently discovered topological insulator, which possesses a pair of helical edge states with opposing spins moving in opposite directions and exhibits the phenomenon of quantum spin Hall effect. We predict an unexpected and nontrivial quantum phase termed "topological Anderson insulator," which is obtained by introducing impurities in a two-dimensional metal; here disorder not only causes metal insulator transition, as anticipated, but is fundamentally responsible for creating extended edge states. We determine the phase diagram of the topological Anderson insulator and outline its experimental consequences.

4 pages, 4 figures

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Cited by in corpus (364)

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• Probing the Topological Anderson Transition in Quasiperiodic Photonic Lattices via Chiral Displacement and Wavelength Tuning
• Squashed entanglement in one-dimensional quantum matter
• Localization and topological transitions in generalized non-Hermitian SSH models
• Machine learning of phases and structures for model systems in physics
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• Charged particle in a flat box with static electromagnetic field and Landau's levels
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• Geometric Effect on Quantum Anomalous Hall States in Magnetic Topological Insulators
• Topological phase diagram of the disordered 2XY model in presence of generalized Dzyaloshinskii-Moriya Interaction
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• Breathing-Driven Metal-Insulator Transition in Correlated Kagome Systems
• Numerical Study of Disorder on the Orbital Magnetization in Two Dimensions
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• Recent progress on disorder-induced topological phases
• Regularized universal topological markers for Dirac systems
• Non-self-averaging topological Anderson insulator
• Coexistence of topological Anderson insulator and multifractal critical phase in a non-Hermitian quasicrystal
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• Disorder-induced chiral and helical Majorana edge modes in a two-dimensional Ammann-Beenker quasicrystal
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• Crossover of spin Hall to quantum anomalous Hall effect in PbC/MnSe heterostructures
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