Localization Properties of Zig‐Zag Edge States in Disordered Phosphorene. Issue 7 (30th April 2018)

• Record Type: Journal Article
• Authors: Niţă, Marian; Ostahie, Bogdan; Ţolea, Mugurel; Aldea, Alexandru
• Is Part Of: Physica status solidi. Volume 12:Issue 7(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-04-30
• Subjects: Anderson disorder -- mesoscopic transport -- phosphorene; Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201800051
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : Herein, the spectral and transport properties in the finite phosphorene lattice are investigated using the tight‐binding model in the presence of Anderson disorder potential. The focus is on the zig‐zag edge states localization, provided by the numerically calculated inverse participation number. At low disorder, the zig‐zag states undergo a localization process, keeping their 1D character, while further increasing the disorder leads to delocalization due to hybridization with the extended 2D states. The disorder‐induced changes in the electronic conductance, from one zig‐zag edge to the other, are also discussed. Abstract : Finite phosphorene lattices have zig‐zag edge states located in the energy gap, whose disorder‐induced localization properties are addressed in this paper. At low Anderson disorder, these states undergo first a localization process while keeping their 1D character. At higher disorder however, the zig‐zag states delocalize due to the hybridization with the extended 2D ones.