Edge states of the topological Anderson insulator

Authors

Gene Moses M Itable; Cristine Villagonzalo

Source

Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Congress, University of the Philippines Visayas, Iloilo City, SPP-2016-3A-04 (2016).

Abstract

The disorder-induced topological Anderson insulator (TAI) has a similar characteristic to a topological insulator, i.e. insulator in the bulk but conductor in the boundary. In the framework of an effective medium theory, we show that at the transition to TAI from a weaker disorder regime, the conditions for the edge states to exist are appropriately changed yet the physics remains unaltered. This then led us to explore the behavior of edge states at the domain wall of a TAI and a non-TAI through numerical simulations.