Phys. Rev. B 74, 233301 (2006) [4 pages]Kondo effect in a one-electron double quantum dot: Oscillations of the Kondo current in a weak magnetic fieldReceived 21 August 2006; published 5 December 2006 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 quasiperiodic oscillation of the Kondo conductance as a function of a small perpendicular magnetic field ∣B⊥∣≲50 mT. 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. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.74.233301
DOI:
10.1103/PhysRevB.74.233301
PACS:
73.21.La, 73.23.Hk, 72.15.Qm
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