Plasmons and Screening in Monolayer and Multilayer Black Phosphorus
University of Minnesota · IBM (United States) · +5 more institutions
Indexed inarxivcrossrefpubmed
Abstract
Black phosphorus exhibits a high degree of band anisotropy. However, we find that its in-plane static screening remains relatively isotropic for momenta relevant to elastic long-range scattering processes. On the other hand, the collective electronic excitations in the system exhibit a strong anisotropy. Band nonparabolicity, due to interband couplings, leads to a plasmon frequency which scales as nβ, where n is the carrier concentration, and β
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7Topics & keywords
Topics
Keywords
- Black phosphorus
- Monolayer
- Plasmon
- Materials science
- Phosphorus
- Optoelectronics
- Engineering physics
- Nanotechnology
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