Evolution of dI/dV maps of the hole charging peak of the n = 2/3 state with increasingly positive V bias: 0.20 V (h), 0.22 V (i), 0.24 V (j), 0.26 V (k) (VTG = 0.49 V, VBG = 1.90 V). The hole charging signal widens into a growing circle as V bias becomes more positive.
