Topological Anderson Insulator

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dc.creatorLi, Jian
dc.creatorChu, Rui-Lin
dc.creatorJain, J. K.
dc.creatorShen, Shun-Qing
dc.date2008-11-19
dc.date.accessioned2026-07-07T13:00:05Z
dc.date.available2026-07-07T13:00:05Z
dc.descriptionDisorder 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.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0811.3045
dc.identifierhttp://arxiv.org/abs/0811.3045
dc.identifierPhys. Rev. Lett 102, 136806 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.136806
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225758
dc.subjectMesoscale and Nanoscale Physics
dc.subjectDisordered Systems and Neural Networks
dc.titleTopological Anderson Insulator
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