IV-CURVES OF TUNNEL JUNCTION ARRAYS AT LOWERED TEMPERATURE BY NUMERICAL-SIMULATION

We have numerically investigated the effect of lowered T on the perfor mance of the Coulomb blockade thermometer, which has been demonstrated to yield primary thermometry in the high T limit where thermal excita tions compete with the Coulomb blockade. The thermometer is formed by an array of tunnel junctions whose differentiated IV - curve is used t o determine the temperature. The IV - curves were calculated by comput er simulations and we have obtained corrections to the analytic high T behaviour due to the lowered tempererature.