Abnormal electronic transport in disordered four-terminal graphene nanodevice

In this paper, a numerical study of quantum transport in a disordered four-terminal graphene nanodevice is investigated based on the Landauer approach. The effects of impurity on transmission coefficient of the electron injected into the system are studied using tight-binding model. In this manner,...

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Bibliographic Details
Published in:Journal of theoretical and applied physics 2013-12, Vol.7 (1), p.54-5
Main Authors: Kordbacheh, Amirhossein Ahmadkhan, Jafari, Azadeh, Arjmand, Mehdi Afshar
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Atomic
Channels
Coefficients
Condensed Matter Physics
Conduction
Disorders
Graphene
Impurities
Mathematical models
Medical and Radiation Physics
Molecular
Nanoscale Science and Technology
Nanostructure
Optical and Plasma Physics
Physics
Physics and Astronomy
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Summary:In this paper, a numerical study of quantum transport in a disordered four-terminal graphene nanodevice is investigated based on the Landauer approach. The effects of impurity on transmission coefficient of the electron injected into the system are studied using tight-binding model. In this manner, we emphasize that when the disorder density is sufficiently large, the transmission coefficients and the current reduce due to multiscattering phenomenon. We have found that the perfectly conducting channel develops in four-terminal device in its zigzag edge if the range of impurity gets exponentially wider. The theoretical results obtained can be a base for the development in designing graphene nanodevice.
ISSN:1735-9325
2251-7235
2251-7235
DOI:10.1186/2251-7235-7-54