Ahmadi, Mohammad Taghi and Fallahpour, Amir Hosssein and Kouhdaragh, Vahid and Ismail, Razali (2009) Band structure effect on carbon nanotube fermi energy. International Review of Physics, 3 (4). pp. 224227. ISSN 1971  680X

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Abstract
The band structure of carbon nanotube (CNT) is obtained from the graphene band structure. This method demonstrates that, the band energy of CNT near to the minimum band energy is parabolic. However it’s not parabolic in other part of the band energy. For nonparabolic condition density of state proportion of numerical integrals which is different from Fermi integrals and numerical solution implemented in degenerate and nondegenerate approximation. Given density of state the carrier concentration is obtained based on the Numerical method as an alternative for tabulated Fermi – Dirac integrals which we call them Carbon nanotube Fermi integrals (CNFI). According to numerically solved Carbon nanotube Fermi integrals, Fermi energy in nonparabolic region of band structure with respect to the band edge is function of temperature that independent of the carrier concentration in the nondegenrate regime. In the other strongly degenerate, the Fermi energy is a function of carrier concentration appropriate for given dimensionality, but is independent of temperature.
Item Type:  Article 

Uncontrolled Keywords:  carbon nanotube, fermi energy, nonparabolic band energy 
Subjects:  T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering 
Divisions:  Electrical Engineering 
ID Code:  18978 
Deposited By:  Ramli Haron 
Deposited On:  29 Nov 2011 09:01 
Last Modified:  29 Nov 2011 09:01 
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