Tunable skewed edges in puckered structures

Abstract

We propose a new type of edges, arising due to the anisotropy inherent in the puckered structure of a honeycomb system such as in phosphorene. Skewed-zigzag and skewed-armchair nanoribbons are semiconducting and metallic, respectively, in contrast to their normal edge counterparts. Their band structures are tunable, and a metal-insulator transition is induced by an electric field. We predict a field-effect transistor based on the edge states in skewed-armchair nanoribbons, where the edge state is gapped by applying arbitrary small electric field $E_z$. A topological argument is presented, revealing the condition for the emergence of such edge states.

Topological argument added

References in corpus (15)

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Cited by in corpus (14)

• Minimal model for higher-order topological insulators and phosphorene
• Strain-induced topological phase transition in phosphorene and phosphorene nanoribbons
• Electro-optical properties of phosphorene quantum dots
• Effect of the edge states on the conductance and thermopower in Zigzag Phosphorene Nanoribbons
• Boundary conditions for phosphorene nanoribbons in the continuum approach
• Crystallographic Characterization of Black Phosphorene and Its Application in Nanostructures
• Tunable Electronic Properties of Multilayer Phosphorene and Its Nanoribbons
• Multiorbital edge and corner states in black phosphorene
• Vacancy-induced Fano resonances in zigzag phosphorene nanoribbons
• Edge and sublayer degrees of freedom for phosphorene nanoribbons with twofold-degenerate edge bands via electric field
• Magnetoelectronic properties of normal and skewed phosphorene nanoribbons
• Quantum transport through the edge states of Zigzag phosphorene nanoribbons in presence of a single point defect: analytic Green's function method
• Tunable transmission due to defects in zigzag phosphorene nanoribbons
• Electronic structure of monolayer antimonene nanoribbons under out-of-plane and transverse bias