Electrical and thermal conductivities of few-layer armchair graphene nanoribbons

The tight-binding Hamiltonian model and the Green’s function formalism have been employed to calculate the temperature dependent electrical and electronic thermal conductivities of metal and few-layer armchair graphene nanoribbon semiconductors and the results were compared with the mono-layer syste...

Full description

Saved in:
Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2019, Vol.92 (1), p.1-11, Article 4
Main Authors: Mousavi, Hamze, Jalilvand, Samira
Format: Article
Language:English
Subjects:
Comparative analysis
Complex Systems
Condensed Matter Physics
Electrical conductivity
Electrical resistivity
Fluid- and Aerodynamics
Formalism (Literary criticism)
Graphene
Graphite
Interlayers
Nanoribbons
Physics
Physics and Astronomy
Regular Article
Solid State Physics
Temperature dependence
Thermal conductivity
Thermal energy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The tight-binding Hamiltonian model and the Green’s function formalism have been employed to calculate the temperature dependent electrical and electronic thermal conductivities of metal and few-layer armchair graphene nanoribbon semiconductors and the results were compared with the mono-layer system. It was observed that due to the overlapping of the nonhybridized p z orbital perpendicular to the sheets, increasing the layers of the systems causes the conductivities of the layers to decrease. Also, these quantities are calculated for three different values of interlayer hopping of the nonhybridized p z orbitals. The results show that in low temperatures, the electrical and thermal conductivities of the system increase when the interlayer hopping term is increased. However, by increasing the temperature, the curves representing electrical conductivities converge to the same value while thermal conductivity decreases. Graphical abstract
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e2018-90581-x