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Basing on the method of Green functions for longitudinal (Coulomb) field in three-layer system of media with spatial and frequency dispersion, the screening effects and spectrum of plasma oscillations in graphene are considered. In graphene monolayer the screening of charges comes to their renormali...
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| Date: | 2011 |
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| Main Authors: | , |
| Format: | Article |
| Language: | Russian |
| Published: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2011
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| Online Access: | https://www.cpts.com.ua/index.php/cpts/article/view/67 |
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| Journal Title: | Chemistry, Physics and Technology of Surface |
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Chemistry, Physics and Technology of Surface| Summary: | Basing on the method of Green functions for longitudinal (Coulomb) field in three-layer system of media with spatial and frequency dispersion, the screening effects and spectrum of plasma oscillations in graphene are considered. In graphene monolayer the screening of charges comes to their renormalization, so that asymptotic of the screening potential is R-1 whereas the screening in graphene bilayers is characterized by R-3 power asymptotics. The plasma spectrum in graphene mono- and bilayer has a symmetric mode with acoustic dispersion law and an antisymmetric one with root dispersion law. |
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