Kondo quantum dots and the novel Kondo-doublet interaction.
We analyze the interactions between two Kondo quantum dots connected to a Rashba-active quantum wire. We find that the Kondo-doublet interaction, at an interdot distance of the order of the wire Fermi length, is over an order of magnitude greater than the RKKY interaction. The effects induced on the Kondo-doublet interaction by the wire spin-orbit coupling can be used to control the quantum dots spin-spin correlation. These results imply that the widely used assumption that the RKKY is the dominant interaction between Anderson impurities must be revised.
Simonin
J
J
Centro Atómico Bariloche and Instituto Balseiro, 8400 S.C. de Bariloche, Río Negro, Argentina.