Lw. Molenkamp et al., SCALING OF THE COULOMB ENERGY DUE TO QUANTUM FLUCTUATIONS IN THE CHARGE ON A QUANTUM-DOT, Physical review letters, 75(23), 1995, pp. 4282-4285
The charging energy of a quantum dot is measured through the effect of
its potential on the conductance of a second dot. This technique allo
ws a measurement of the scaling of the dot's charging energy with the
conductance of the tunnel barriers leading to the dot. We find that th
e charging energy scales quadratically with the reflection probability
of the barriers. The observed power law agrees with a recent theory.