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Computational Investigation of the Electronic and Optical Properties of Planar Ga-Doped Graphene
Joint Authors
Balatsky, Alexander V.
Creange, Nicole
Constantin, Costel
Zhu, Jian-Xin
Haraldsen, Jason T.
Source
Advances in Condensed Matter Physics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-08-05
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
We simulate the optical and electrical responses in gallium-doped graphene.
Using density functional theory with a local density approximation, we simulate the electronic band structure and show the effects of impurity doping (0–3.91%) in graphene on the electron density, refractive index, optical conductivity, and extinction coefficient for each doping percentage.
Here, gallium atoms are placed randomly (using a 5-point average) throughout a 128-atom sheet of graphene.
These calculations demonstrate the effects of hole doping due to direct atomic substitution, where it is found that a disruption in the electronic structure and electron density for small doping levels is due to impurity scattering of the electrons.
However, the system continues to produce metallic or semimetallic behavior with increasing doping levels.
These calculations are compared to a purely theoretical 100% Ga sheet for comparison of conductivity.
Furthermore, we examine the change in the electronic band structure, where the introduction of gallium electronic bands produces a shift in the electron bands and dissolves the characteristic Dirac cone within graphene, which leads to better electron mobility.
American Psychological Association (APA)
Creange, Nicole& Constantin, Costel& Zhu, Jian-Xin& Balatsky, Alexander V.& Haraldsen, Jason T.. 2015. Computational Investigation of the Electronic and Optical Properties of Planar Ga-Doped Graphene. Advances in Condensed Matter Physics،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1052290
Modern Language Association (MLA)
Creange, Nicole…[et al.]. Computational Investigation of the Electronic and Optical Properties of Planar Ga-Doped Graphene. Advances in Condensed Matter Physics No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1052290
American Medical Association (AMA)
Creange, Nicole& Constantin, Costel& Zhu, Jian-Xin& Balatsky, Alexander V.& Haraldsen, Jason T.. Computational Investigation of the Electronic and Optical Properties of Planar Ga-Doped Graphene. Advances in Condensed Matter Physics. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1052290
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052290