Journal
PHYSICAL REVIEW B
Volume 90, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.90.115439
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Funding
- Office of Naval Research [N000141410317]
- National Science Foundation [ECCS-1231855]
- Defense Threat Reduction Agency [HDTRA1-13-1-0013]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1231855] Funding Source: National Science Foundation
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We present a symmetry analysis of electronic band structure 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 wave vector k away from the zone center using elementary group theory. Importantly, we expose the underlying symmetrics 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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