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

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

2006-07-03

arxiv.org/abs/cond-mat/0607044v2

Phys. Rev. B 74, 233301 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.74.233301

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.

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