Impact of electron–phonon coupling on electron transport through T-shaped arrangements of quantum dots in the Kondo regime

Beilstein Journal of Nanotechnology

article

Patryk Florków¹  Stanisław Lipiński¹ 

[1]Department of Theory of Nanostructures, Institute of Molecular Physics, Polish Academy of Sciences

关键词: Fano effect;    Kondo effect;    polarons;    quantum dots;   

DOI  :  10.3762/bjnano.12.89

学科分类：环境监测和分析

来源: Beilstein - Institut zur Foerderung der Chemischen Wissenschaften

【 摘 要 】

We calculate the conductance through strongly correlated T-shaped molecular or quantum dot systems under the influence ofphonons. The system is modelled by the extended Anderson–Holstein Hamiltonian. The finite-U mean-field slave boson approachis used to study many-body effects. Phonons influence both interference and correlations. Depending on the dot unperturbed energyand the strength of electron–phonon interaction, the system is occupied by a different number of electrons that effectively interactwith each other repulsively or attractively. This leads, together with the interference effects, to different spin or charge Fano–Kondoeffects.

【 授权许可】

CC BY