Triplet Fermions and Dirac Fermions in Borophene

Abstract

Borophene is a monolayer materials made of boron. A perfect planar boropehene called ${\beta }_{12}$ borophene has Dirac cones and they are well reproduced by a tight-binding model according to recent experimental and first-principles calculation results. We explicitly derive a Dirac theory for them. Dirac cones are gapless when the inversion symmetry exists, while they are gapped when it is broken. In addition, three-band touching points emerge together with pseudospin triplet fermions when all transfer energy is equal and all on-site energy is equal. The three-band touching is slightly resolved otherwise. We construct effective three-band theories for triplet fermions. We also study the edge states of borophene nanoribbons, which show various behaviors depending on the way of edge terminations.

8 pages, 7 figures

References in corpus (7)

• The electronic properties of graphene
• Germanene: a novel two-dimensional Germanium allotrope akin to Graphene and Silicene
• Valley-Polarized Metals and Quantum Anomalous Hall Effect in Silicene
• Novel Precursors for Boron Nanotubes: The Competition of Two-Center and Three-Center Bonding in Boron Sheets
• Arsenene: Two-dimensional buckled and puckered honeycomb arsenic systems
• Dirac fermions in borophene
• Electrically Tunable Quasi-Flat Bands, Conductance and Field Effect Transistor in Phosphorene

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