The influence of intradot Coulomb interactions on the conductance for a parallel-coupled triple quantum dot system

He, Zhiqun; Lü, Tianquan; Li, Hua; Li, Linjun; Cui, Lian; Xue, Hai-Bin

doi:10.1088/0031-8949/84/03/035703

Cited by 8 publications

(4 citation statements)

References 33 publications

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“…Also, the effect of intra-dot Coulomb interaction on the transport properties of structures consisting of two or more QDs has been studied. For example, in the [30], the effect of intradot Coulomb interactions on the conductivity for a parallel pair triple QD system has been investigated. And it is shown that, by controlling the magnitude of intradot Coulomb interaction, a Fano-antiresonance peak can be reversed and a transition between the resonance peak and Fano antiresonance is reported.…”

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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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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“…An intriguing phenomenon known as the Franck-Condon effect [20][21][22] has been observed in suspended carbon nanotubes (CNTs) due to the EP coupling. The Franck-Condon blockade can lead to a negative differential conductance [23][24][25] when the bias voltage exceeds the phonon frequency.…”

Section: Introductionmentioning

confidence: 99%

Influence of electron—phonon interaction on the properties of transport through double quantum dot with ferromagnetic leads

Luo¹,

Wang²,

Liang³

et al. 2014

Chinese Phys. B

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Electronic transport through a vibrating double quantum dot (DQD) in contact with noncollinear ferromagnetic (FM) leads is investigated. The state transition between the two dots of the DQD is excited by an AC microwave driving field. The corresponding currents and differential conductance are calculated in the Coulomb blockade regime by means of the Born-Markov master equation. It is shown that the interplay between electrons and phonons gives rise to phonon-assisted tunneling resonances and Franck-Condon blockade under certain conditions. In noncollinear magnetic configurations, spin-blockade effects are also observed, and the angle of polarization has some influence on the transport characteristics.

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“…Three-dot structures have also received some attention. [28][29][30][31][32] For example, de Guevara and Orellana [28] proposed a parallel-coupled triple quantum dot molecule and investigated the Fano resonances and bound states in continuum. Li [32] investigated Fano resonance and flux-dependent transport through a triplearm Aharonov-Bohm interferometer under an applied electric field.…”

Section: Introductionmentioning

confidence: 99%

Fano effect of a laterally coupled vertical triple quantum dot system

He¹,

Lü²,

Zhang³

2013

Chinese Phys. B

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The influence of intradot Coulomb interactions on the conductance for a parallel-coupled triple quantum dot system

Cited by 8 publications

References 33 publications

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

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

Influence of electron—phonon interaction on the properties of transport through double quantum dot with ferromagnetic leads

Fano effect of a laterally coupled vertical triple quantum dot system

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