Electrically Tunable Quasi-Flat Bands, Conductance and Field Effect Transistor in Phosphorene

Abstract

Phosphorene, a honeycomb structure of black phosphorus, was isolated recently. We investigate electric properties of phosphorene nanoribbons based on the tight-binding model. A prominent feature is the presence of quasi-flat edge bands entirely detached from the bulk band. We explore the mechanism of the emergence of the quasi-flat bands analytically and numerically from the flat bands well known in graphene by a continuous deformation of a honeycomb lattice. The quasi-flat bands can be controlled by applying in-plane electric field perpendicular to the ribbon direction. The conductance is switched off above a critical electric field, which acts as a field-effect transistor. The critical electric field is anti-proportional to the width of a nanoribbon. This results will pave a way toward nanoelectronics based on phosphorene.

6 pages, 5 figures

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• Transport and Optical Properties of Single- and Bilayer Black Phosphorus with Defects
• Strain-induced topological phase transition in phosphorene and phosphorene nanoribbons
• Topological Protected Dirac Cones in Compressed Bulk Black Phosphorus
• Thermoelectric transport in monolayer phosphorene
• Multilayers black phosphorus: from tight-binding to continuum description
• Electronic and optical properties of bilayer blue phosphorus
• Electro-optical properties of phosphorene quantum dots
• Floquet engineering of black phosphorus upon below-gap pumping
• Two topologically distinct Dirac-line semimetal phases and topological phase transitions in rhombohedrally stacked honeycomb lattices
• Electronic properties of bilayer phosphorene quantum dots in the presence of perpendicular electric and magnetic fields
• Aharonov-Bohm effect in monolayer black phosphorus (phosphorene) nanorings
• Crystallographic Characterization of Black Phosphorene and Its Application in Nanostructures
• Flat band analogues and flux driven extended electronic states in a class of geometrically frustrated fractal networks
• Optical third harmonic generation in black phosphorus
• Nitrogen dioxide and ammonia gas molecules interaction studies on phosphorene nanosheet --- a DFT investigation
• Pseudospin Electronics in Phosphorene Nanoribbons
• Edge magnetic properties of black phosphorene nanoribbons
• Interplay of Coulomb interaction and disorder in a two-dimensional semi-Dirac fermion system
• Edge State and Intrinsic Hole Doping in Bilayer Phosphorene
• Edge and sublayer degrees of freedom for phosphorene nanoribbons with twofold-degenerate edge bands via electric field
• Anisotropy engineering edge magnetism in zigzag honeycomb nanoribbons