Coulomb Blockade Fluctuations in Strongly Coupled Quantum Dots
S. M. Maurer, S. R. Patel, C. M. Marcus, C. I. Duruoz, J. S. Harris,
Abstract
Quantum fluctuations of Coulomb blockade are investigated as a function of the coupling to reservoirs in semiconductor quantum dots. We use fluctuations in the distance between peaks ΔN apart to characterize both the amplitude and correlation of peak motion. For strong coupling, peak motion is greatly enhanced at low temperature, but does not show an increase in peak-to-peak correlation. These effects can lead to anomalous temperature dependence in the Coulomb valleys, similar to behavior ascribed to Kondo physics.
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