Kondo effects and shot noise enhancement in a laterally coupled double quantum dot

Abstract

The spin and orbital Kondo effects and the related shot noise for a laterally coupled double quantum dot are studied taking account of coherent indirect coupling via a reservoir. We calculate the linear conductance and shot noise for various charge states to distinguish between the spin and orbital Kondo effects. We find that a novel antiferromagnetic exchange coupling can be generated by the coherent indirect coupling, and it works to suppress the spin Kondo effect when each quantum dot holds just one electron. We also show that we can capture the feature of the pseudospin Kondo effect from the shot noise measurement.

11 pages, 5 figures, accepted for publication in Physical Review B

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Cited by in corpus (7)

• Spin-dependent thermoelectric effects in a strongly correlated double quantum dot
• Capacitively coupled double quantum dot system in the Kondo regime
• The role of the indirect tunneling processes and asymmetry in couplings in orbital Kondo transport through double quantum dots
• Nonequilibrium transport properties of a double quantum dot in the Kondo regime
• Spin versus charge noise from Kondo traps
• Full counting statistics of Kondo-type tunneling in a quantum dot: the fluctuation effect of Slave-Boson field
• Non-Markovian full counting statistics in quantum dot molecules