Kondo effect in a one-electron double quantum dot: Oscillations of the Kondo current in a weak magnetic field

Abstract

We present transport measurements of the Kondo effect in a double quantum dot charged with only one or two electrons, respectively. For the one electron case we observe a surprising quasi-periodic oscillation of the Kondo conductance as a function of a small perpendicular magnetic field |B| \lesssim 50mT. We discuss possible explanations of this effect and interpret it by means of a fine tuning of the energy mismatch of the single dot levels of the two quantum dots. The observed degree of control implies important consequences for applications in quantum information processing.

References in corpus (4)

• Kondo effect in quantum dots
• Direct control of the tunnel splitting in a one-electron double quantum dot
• Transport spectroscopy of Kondo quantum dots coupled by RKKY interaction
• Fano effect and Kondo effect in quantum dots formed in strongly coupled quantum wells

Cited by in corpus (7)

• Realization of SU(N) Kondo effect in strong magnetic field
• Time-dependent magnetotransport in an interacting double quantum wire with window coupling
• Nonthermal broadening in the conductance of double quantum dot structures
• Dynamical charge susceptibility in nonequilibrium double quantum dots
• A comprehensive study of out-of-equilibrium Kondo effect and Coulomb blockade
• A widely tunable few electron droplet
• Kondo Temperature Evaluated from Linear Conductance in Magnetic Fields