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      https://www.ias.ac.in/article/fulltext/pram/072/05/0887-0902

    • Keywords

       

      Coupled quantum dots; Coulomb blockade; non-equilibrium transport; inter-dot coupling.

    • Abstract

       

      Transport through symmetric parallel coupled quantum dot system has been studied, using non-equilibrium Green function formalism. The inter-dot tunnelling with on-dot and inter-dot Coulomb repulsion is included. The transmission coefficient and Landaur–Buttiker like current formula are shown in terms of internal states of quantum dots. The effect of inter-dot tunnelling on transport properties has been explored. Results, in intermediate inter-dot coupling regime show signatures of merger of two dots to form a single composite dot and in strong coupling regime the behaviour of the system resembles the two decoupled dots.

    • Author Affiliations

       

      Shyam Chand1 G Rajput1 K C Sharma1 P K Ahluwalia1

      1. Department of Physics, Himachal Pradesh University, Shimla 171 005, India
    • Dates

       
  • Pramana – Journal of Physics | News

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