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<strong>Ab initio calculation of electron transport in armchair graphane nano structure containing graphene quantum dot</strong>

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Title Statement <strong>Ab initio calculation of electron transport in armchair graphane nano structure containing graphene quantum dot</strong>
 
Added Entry - Uncontrolled Name KUMAR, NAVEEN ; Shoolini University
Sharma, Jyoti Dhar ; Shoolini University
Ahluwalia, Pradeep Kumar ; Himachal Pradesh University
 
Uncontrolled Index Term Condensed matter physics
Graphene; Graphane; Quantum dot; DFT; Electron transport; TranSIESTA
 
Summary, etc. First principle quantum transport calculations have been performed for armchair graphane nano structures containing graphene quantum dots (QD) of increasing sizes. Each QD has been formed by creating vacancies in the H lattice of graphane. TranSIESTA has been used for calculating transport properties with nonequilibrium Green's function approach within density functional theory. Transmission functions, electron density of states and current-voltage characteristics have been calculated using graphene electrodes. Band structure, electron density of states and zero bias conductance (transmission function) have been found to be in consonance with each other. The current in V-I characteristics shows non linear fluctuating pattern and tends to saturate as the voltage is increased. The value of current is graphene QD size dependent. The current lies in the range of nano ampere (for QD consisting of 16 contiguous vacancies) to femto ampere (for QD consisting of 6 contiguous vacancies).
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2016-07-26 10:36:38
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/3719
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 54, ##issue.no## 7 (2016): Indian Journal of Pure & Applied Physics
 
Language Note en
 
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