Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1998-06-03
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
13 pages, 3 eps figures
Scientific paper
10.1016/S0038-1098(98)00439-6
We report measurements of the Coulomb-blockade current in resistively isolated (R_{Isol} >> h/e^{2}) tunnel junctions for the temperature range 60mK $We report measurements of the Coulomb-blockade current in resistively isolated ($R_{Isol}\gg h/e^{2})$ tunnel junctions for the temperature range 60mK < T < 230mK where the charging energy E_{c} is much greater than the thermal energy. A zero-bias resistance R_{0} of up to 10^{4}R_{T} (the tunnel resistance of the bare junction) is obtained. For eV << E_{c}, the I-V curves for a given R_{Isol} scale as a function of V/T, with I \propto V^{\alpha (R_{Isol})} over a range of V. The data agree well with numerical calculations of the tunneling rate that include environmental effects.
Averin Dmitri V.
Friedman Jonathan R.
Han Siyuan
Lukens James E.
Zheng Wei
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