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Observation of Strong Coulomb Blockade in Resistively Isolated Tunnel Junctions | | Wei Zheng
; Jonathan R. Friedman
; D.V. Averin
; Siyuan Han
; J.E. Lukens
; | | Date: |
3 Jun 1998 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Affiliation: | SUNY Stony Brook, Current address: University of Kansas | | Abstract: | 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. | | Source: | arXiv, cond-mat/9806047 | | Services: | Forum | Review | PDF | Favorites | |
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