Double quantum dots: Kondo resonance induced by an interdot interaction

摘要: We report on an investigation of the Kondo effect induced by interdot off-site interaction in a double-quantum-dot system. In limit zero tunnel coupling ${(t}_{C}=0),$ we discuss cotunneling process involving exchange electron positions between two quantum dots. At low temperatures this induces resonance with peculiar characteristic: one dot is pinned at chemical potential lead that attached to other dot. When ${t}_{C}\ensuremath{\ne}0,$ processes molecular states which span dots induce several resonances each Then conductance double-dot device shows sharp features including multiple peaks and abrupt drops having typical character. physical origin these features.