Graphene plasmons: Impurities and nonlocal effects
Artikel i vetenskaplig tidskrift, 2018

This work analyzes how impurities and vacancies on the surface of a graphene sample affect its optical conductivity and plasmon excitations. The disorder is analyzed in the self-consistent Green’s function formulation and nonlocal effects are fully taken into account. It is shown that impurities modify the linear spectrum and give rise to an impurity band whose position and width depend on the two parameters of our model, the density and the strength of impurities. The presence of the impurity band strongly influences the electromagnetic response and the plasmon losses. Furthermore, we discuss how the impurity-band position can be obtained experimentally from the plasmon dispersion relation and discuss this in the context of sensing.


Giovanni Viola

Chalmers, Mikroteknologi och nanovetenskap, Tillämpad kvantfysik

Tobias Wenger

Chalmers, Mikroteknologi och nanovetenskap, Tillämpad kvantfysik

Jari Kinaret

Chalmers, Fysik, Kondenserade materiens teori

Mikael Fogelström

Chalmers, Mikroteknologi och nanovetenskap

Physical Review B - Condensed Matter and Materials Physics

24699950 (ISSN) 24699969 (eISSN)

Vol. 97 8 085429


Oorganisk kemi

Annan fysik

Den kondenserade materiens fysik


Nanovetenskap och nanoteknik



Grundläggande vetenskaper


C3SE (Chalmers Centre for Computational Science and Engineering)



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