Fano resonance and zero-bias anomaly in parallel double quantum dots coupled to Luttinger liquid leads

Yang, Kai-Hua; Di, He-Yang; Wang, Huaiyu; Wang, Xu; Yang, Ai-ai

doi:10.1016/j.physleta.2020.127095

Cited by 9 publications

(2 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Aharonov-Bohm oscillation, Fano resonance, Kondo effect, quantum phase transition, thermoelectric effect are a few of examples. [1][2][3][4][5][6][7][8][9][10] Research on transport properties of double-quantum-impurity systems not only provides a theoretical basis for the study of integrated circuits but also plays a vital role in the study of quantum bit, quantum regulation, and other aspects. [11] Although many studies have been made on the spatial coherence of the electron wave function in quantum-impurity systems, the temporal coherence of the same system remains to be studied due to the difficulties involved in dealing with the time phase coherence and time memory effect of the electrons.…”

Section: Introductionmentioning

confidence: 99%

Dynamic transport characteristics of side-coupled double-quantum-impurity systems

Wang¹,

Wei²

2022

Chinese Phys. B

View full text Add to dashboard Cite

A systematic study is performed on time-dependent dynamic transport characteristics of a side-coupled double-quantum-impurity system based on the hierarchical equations of motion. It is found that the transport current behaves like a single quantum dot when the coupling strength is low during tunneling or Coulomb coupling. For the case of only tunneling transition, the dynamic current oscillates due to the temporal coherence of the electron tunneling device. The oscillation frequency of the transport current is related to the step voltage applied by the lead, while temperature T, electron–electron interaction U and the bandwidth W have little influence. The amplitude of the current oscillation exists in positive correlation with W and negative correlation with U. With the increase in coupling t 12 between impurities, the ground state of the system changes from a Kondo singlet of one impurity to a spin singlet of two impurities. Moreover, lowering the temperature could promote the Kondo effect to intensify the oscillation of the dynamic current. When only the Coulomb transition is coupled, it is found that the two split-off Hubbard peaks move upward and have different interference effects on the Kondo peak at the Fermi surface with the increase in U 12, from the dynamics point of view.

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamic transport characteristics of side-coupled double-quantum-impurity systems

Wang¹,

Wei²

2022

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

“…Since the double quantum-impurity system possesses a variety of geometrical configurations, its tunneling path is more than that of the single quantum-impurity system, and thus there are more abundant physical properties belonging to the double quantum impurity systems. The Aharonov-Bohm oscillation, Fano resonance, Kondo effect, quantum phase transition, thermoelectric effect are a few examples [1][2][3][4][5][6][7][8][9][10] . The research on the transport properties of the double quantum-impurity systems not only provides a theoretical basis for the study of integrated circuits but also plays a vital role in the study of quantum bit, quantum regulation, and other aspects 11 .…”

Section: Introductionmentioning

confidence: 99%

Dynamic Transport Characteristics of Side-Coupled Double Quantum-Impurity Systems

Wang,

Wei

2021

Preprint

View full text Add to dashboard Cite

A systematic study is made on the time-dependent dynamic transport characteristics of the sidecoupled double quantum-impurity system based on the hierarchical equations of motion. It is found that the transport current behaves like a single quantum dot when the coupling strength is low during tunneling or coulomb coupling. The dynamic current oscillates due to the temporal coherence of the electron tunneling device only when the tunneling transition is coupled. The oscillation frequency of the transport current is related to the step voltage applied by the lead, while the T , e-e interaction U and the bandwidth W have little influence. The amplitude of the current oscillation exists in positive correlation with W and negative correlation with U . With the increase in coupling t12 between impurities, the ground state of the system changes from a Kondo singlet of one impurity to a spin-singlet of two impurities. Moreover, lowering the temperature could promote the Kondo effect to intensify the oscillation of the dynamic current. When only the coulomb transition is coupled, it is found that the two split-off Hubbard peaks move upward and have different interference effects on the Kondo peak at the Fermi surface with the increase in U12, from the dynamics point of view.

show abstract

Antiresonance and negative differential conductance in parallel-coupled vibrating molecular dots coupled to Luttinger liquid leads

Yang

Wang

et al. 2022

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

Fano resonance and zero-bias anomaly in parallel double quantum dots coupled to Luttinger liquid leads

Cited by 9 publications

References 36 publications

Dynamic transport characteristics of side-coupled double-quantum-impurity systems

Dynamic transport characteristics of side-coupled double-quantum-impurity systems

Dynamic Transport Characteristics of Side-Coupled Double Quantum-Impurity Systems

Antiresonance and negative differential conductance in parallel-coupled vibrating molecular dots coupled to Luttinger liquid leads

Contact Info

Product

Resources

About