Transport in coupled quantum dots: Kondo effect versus antiferromagnetic correlation

C. A. Büsser, E. V. Anda, A. L. Lima, Maria A. Davidovich, G. Chiappe
2000 Physical Review B (Condensed Matter)  
The interplay between the Kondo effect and the inter-dot magnetic interaction in a coupled-dot system is studied. An exact result for the transport properties at zero temperature is obtained by diagonalizing a cluster, composed by the double-dot and its vicinity, which is connected to leads. It is shown that the system goes continuously from the Kondo regime to an anti-ferromagnetic state as the inter-dot interaction is increased. The conductance, the charge at the dots and the spin-spin
more » ... tion are obtained as a function of the gate potential.
doi:10.1103/physrevb.62.9907 fatcat:wmjlycgslbh4ndlknahbighxvq