Inter-dot coupling effects on transport through correlated parallel coupled quantum dots |
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Authors: | Shyam Chand G Rajput K C Sharma and P K Ahluwalia |
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Institution: | (1) Department of Physics, Himachal Pradesh University, Shimla, 171 005, India |
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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.
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Keywords: | Coupled quantum dots Coulomb blockade non-equilibrium transport interdot coupling |
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