Renormalization-group calculations of ground-state and transport properties of ultrasmall tunnel junctions

H.O. Frota, Karsten Flensberg

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Abstract

We have done a numerical renormalization-group calculation for a Hamiltonian modeling charging effect in ultrasmall tunnel junctions. We find that the conductance is enhanced by the quantum charge fluctuations allowing tunneling below the charging energy gap. However, in all cases the conductance is found to vanish at zero frequency.
Original languageEnglish
JournalPhysical Review B
Volume46
Issue number23
Pages (from-to)15207-15211
Number of pages5
ISSN2469-9950
DOIs
Publication statusPublished - 15 Dec 1992

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