Kondo and Dicke effect in quantum-dots side coupled to a quantum wire

Abstract

Electron tunneling through quantum-dots side coupled to a quantum wire, in equilibrium and nonequilibrium Kondo regime, is studied. The mean-field finite-$U$ slave-boson formalism is used to obtain the solution of the problem. We have found that the transmission spectrum shows a structure with two anti-resonances localized at the renormalized energies of the quantum dots. The DOS of the system shows that when the Kondo correlations are dominant there are two Kondo regimes with its own Kondo temperature. The above behavior of the DOS can be explained by quantum interference in the transmission through the two different resonance states of the quantum dots coupled to common leads. This result is analogous to the Dicke effect in optics. We investigate the many body Kondo states as a function of the parameters of the system.

5 figures. To appear in Phys. Rev. B

References in corpus (1)

• Interference Effects on Kondo-Assisted Transport through Double Quantum Dots

Cited by in corpus (4)

• Kondo-Dicke resonances in electronic transport through triple quantum dots
• Finite-temperature conductance signatures of quantum criticality in double quantum dots
• Dicke-like effect in spin-polarized transport through coupled quantum dots
• Negative differential conductance induced by electronic correlation in a double quantum-dot molecule