Electric-field tunable Dirac semimetal state in phosphorene thin films

Abstract

We study the electric-field tunable electronic properties of phosphorene thin films, using the framework of density functional theory. We show that phosphorene thin films offer a versatile material platform to study two dimensional Dirac fermions on application of a transverse electric field. Increasing the strength of the transverse electric field beyond a certain critical value in phosphorene leads to the formation of two symmetry protected gapless Dirac fermions states with anisotropic energy dispersion. The spin-orbit coupling splits each of these Dirac state into two spin- polarized Dirac cones which are also protected by non-symmorphic crystal symmetries. Our study shows that the position as well as the carrier velocity of the spin polarized Dirac cone states can be controlled by the strength of the external electric field.

7 pages and 6 figures; final revised version - to appear in Phys. Rev. B

References in corpus (6)

• Electric Field Effect in Atomically Thin Carbon Films
• Electronic structure of silicon-based nanostructures
• Oxygen defects in phosphorene
• Electric Field Induced Topological Phase Transition in Two-Dimensional Few-layer Black Phosphorus
• Electric field induced gap modification in ultrathin blue phosphorous
• Topological electronic structure and Weyl semimetal in the TlBiSe${}_2$ class of semiconductors

Cited by in corpus (4)

• Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure
• Electronic properties of bilayer phosphorene quantum dots in the presence of perpendicular electric and magnetic fields
• Electronic structure of charged bilayer and trilayer phosphorene
• Power law decay of local density of states oscillations near a line defect in a system with semi-Dirac points