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 language | English |
|---|---|
| Journal | Physical Review B |
| Volume | 46 |
| Issue number | 23 |
| Pages (from-to) | 15207-15211 |
| Number of pages | 5 |
| ISSN | 2469-9950 |
| DOIs | |
| Publication status | Published - 15 Dec 1992 |