Transition from metal to higher-order topological insulator driven by random flux
Chang-An Li, Song-Bo Zhang, Jan Carl Budich, Björn Trauzettel
Abstract
Random flux can drive a phase transition from a metal to a higher-order topological insulator in the two-dimensional Su-Schrieffer-Heeger model. This transition happens in the vicinity of zero energy which is surprising when compared to the influence of random flux on a simple square-lattice model. The authors analytically discover the importance of sublattice degrees of freedom for the transition to happen.
Topics & Concepts
Topological insulatorCondensed matter physicsFlux (metallurgy)Order (exchange)Topology (electrical circuits)Metal–insulator transitionPhysicsStatistical physicsMaterials scienceQuantum mechanicsMathematicsElectrical resistivity and conductivityCombinatoricsBusinessMetallurgyFinanceTopological Materials and PhenomenaQuantum many-body systemsTheoretical and Computational Physics