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Low voltage conductance of small tunnel junctions | | F. Guinea
; M. Ueda
; | | Date: |
6 Jul 1992 | | Subject: | cond-mat | | Abstract: | A discrete charge transfer in a small tunnel junction where Coulomb interactions are important can excite electron-hole pairs near the Fermi level. We use a simple model to study the associated nonequilibrium properties and found two novel effects: (i) for junctions with electrodes of the same electronic properties, a leakage current exists within the Coulomb gap even when the environmental impedance is infinite; (ii) for junctions with electrodes of different electronic properties, the differential conductance diverges when a net interaction between conduction electrons is attractive, and it is strongly suppressed for a net repulsive interaction. | | Source: | arXiv, cond-mat/9207007 | | Services: | Forum | Review | PDF | Favorites | |
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