Transport Properties and Sub-band Modulation of the SWCNT Based Nano-scale Transistors

  • Surender Pratap
  • Niladri SarkarEmail author
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 215)


We apply NEGF formalism on a Single Walled Carbon Nano Tube (SWCNT) based transistor under which it is treated as an open quantum system where the Schrodinger equation for the channel is given as (H + Σ)ψ(r) + (S) = (r). Here, (S) is the source term arising due to the channel/contact hybridization and ‘Σ’ is the self-energy term which is a complex matrix whose real part is related to the corrections in the channel eigenstate energies and imaginary part is related to the broadening of the channel eigenstates. For example, a one-level channel gets hybridized to a Lorentzian density of states under contact.


Open quantum system SWCNT Sub-bands NEGF 



This work is supported by the BITS-Pilani Seed Grant Scheme given to N.S. The simulations were performed on IBM rack servers acquired under BITS-Pilani Seed Grant scheme and DST-FIST scheme of Govt. of India. The other author S.P acknowledges BITS-Pilani for his Research Fellowship.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of PhysicsBirla Institute of Technology & Science, PilaniPilaniIndia

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