A generalised approach to calculate various transport observables for a linear array of series and parallel quantum dots

Devi, Sarita; Ahluwalia, P. K.; Chand, Shyam

doi:10.1007/s12043-020-1927-8

Cited by 2 publications

(1 citation statement)

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“…Therefore, many configurations have been designed and studied experimentally and theoretically, in which the effects of Coulomb interaction on the transport properties of QDs have been investigated. For instance, the transport properties of a single QD sandwiched between two reservoirs have been studied in many work [23][24][25][26][27][28]. A remarkable property in such structures, arising from intra-dot Coulomb interaction, is that the conductance peak remain resolved in temperatures much higher than the bare energy level spacing, which is of order of 0.05 meV in the sample studied in [29].…”

Section: Introductionmentioning

confidence: 99%

The effect of inter-dot Coulomb interaction on the charge and energy transport properties of a five-terminal system consisting of three Coulomb-coupled quantum dots

Safdari,

Soltani,

Rashedi

2023

Nanotechnology

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We have studied a 5-terminal system consisting of three single level quantum dots that are in contact with their respective reservoirs. In addition to the intra-dot Coulomb interaction, the electron in the dot affected by an inter-dot Coulomb repulsion from its adjacent quantum dot. We describe this system by an Anderson type model Hamiltonian and apply the Green’s function method to study the transport properties of the system. Since we are interested in temperatures higher than the Kondo temperature, we use the equations of motion technique to calculate Green’s functions. Numerical analysis shows that there is a correlation between the transport characteristics of the lower and upper dot and we can change the conductivity of the lower dot only by varying the parameters of the upper dot and vice versa. We demonstrated that the middle dot play the role of the switch on/off of this correlation. Also, we investigated the effect of thermoelectric properties. We found that the inter-dot Coulomb interaction can improve the thermoelectric performance of the system.

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