Current-Voltage Characteristics of Borophene and Borophane Sheets

Abstract

Motivated by recent experimental and theoretical research on a monolayer of Boron atoms, Borophene, current-voltage characteristics of three different Borophene sheets, 2Pmmn, 8Pmmn and 8Pmmm, are calculated using density functional theory combined with nonequilibriumGreen function formalism. Borophene sheets with two and eight atoms in a unit cell are considered and bandstructure, electron density and structural anisotropy of them are analyzed in details. Results show that 8Pmmn and 8Pmmm structures which have eight atoms in the unit cell have less anisotropy than 2Pmmn. In addition, although 8Pmmn shows a Dirac cone in the bandstructure, its current is lower than two others. We also consider a fully hydrogenated Borophene, Borophane, and find that the hydrogenation process reduces the structural anisotropy and the current significantly. Our findings reveal that the current-voltage characteristics of the Borophene sheets can be used to detect the kind and the growth direction of the sample because it is strongly dependent on the direction of the electron transport, anisotropy and details of the unit cell of the Borophene.

6 pages, 7 figures

References in corpus (20)

• Electric Field Effect in Atomically Thin Carbon Films
• Graphene: Status and Prospects
• Density functional method for nonequilibrium electron transport
• Experimental Realization of Two-Dimensional Boron Sheets
• Epitaxial Growth of Two-Dimensional Stanene
• Germanene: a novel two-dimensional Germanium allotrope akin to Graphene and Silicene
• Semimetallic Two-Dimensional Boron Allotrope with Massless Dirac Fermions
• Borophene as an extremely high capacity electrode material for Li-ion and Na-ion batteries
• Electronic, optical, and thermodynamic properties of borophene from first-principle calculations
• Prediction of phonon-mediated superconductivity in borophene
• Borophene as an anode material for Ca, Mg, Na or Li ion storage: A first-principle study
• Physically founded phonon dispersions of few-layer materials, and the case of borophene
• The Ideal Tensile Strength and Phonon Instability of Borophene
• Stability and Strength of Atomically Thin Borophene from First Principles Calculations
• Electronic properties of 8-Pmmn borophene
• Enhanced superconductivity by strain and carrier-doping in borophene: A first principles prediction
• Mechanical properties of borophene films: A reactive molecular dynamics investigation
• How will freestanding borophene nanoribbons look like? An analysis of their possible structures, magnetism and transport properties
• Phonon transport in single-layer Boron nanoribbons
• Borophane: Stable Two-dimensional Anisotropic Dirac Material with Ultrahigh Fermi Velocity

Cited by in corpus (4)

• 2D Hydrogenated graphene-like borophene as a high capacity anode material for improved Li/Na ion batteries: A first principles study
• Hyperbolic plasmon modes in tilted Dirac cone phases of borophene
• Borophene hydride: a stiff 2D material with high thermal conductivity and attractive optical and electronic properties
• Tunable wavevector filtering in borophane based normal metal-barrier-normal metal junctions