Electrons and holes in phosphorene

Abstract

We present a symmetry analysis of electronic bandstructure including spin-orbit interaction close to the insulating gap edge in monolayer black phosphorus ('phosphorene'). Expressions for energy dispersion relation and spin-dependent eigenstates for electrons and holes are found via simplification of a perturbative expansion in wavevector $k$ away from the zone center using elementary group theory. Importantly, we expose the underlying symmetries giving rise to substantial anisotropy in optical absorption, charge and spin transport properties, and reveal the mechanism responsible for valence band distortion and possible lack of a true direct gap.

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• Transition Metal and Vacancy Defect Complexes in Phosphorene: A Spintronic Perspective
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• Spin-orbit coupling and spin relaxation in phosphorene: Intrinsic versus extrinsic effects
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• Crystallographic Characterization of Black Phosphorene and Its Application in Nanostructures
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• Edge and sublayer degrees of freedom for phosphorene nanoribbons with twofold-degenerate edge bands via electric field
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