Abstract
We study cotunneling in a double-junction Coulomb blockade device under the influence of time-dependent potentials. It is shown that the ac bias leads to photon-assisted cotunneling that in some cases may dominate the transport. We derive a general nonperturbative expression for the tunneling current in the presence of oscillating potentials and give a perturbative expression for the photon-assisted cotunneling current.
| Original language | English |
|---|---|
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 55 |
| Issue number | 19 |
| Pages (from-to) | 13118-13123 |
| Number of pages | 6 |
| ISSN | 1098-0121 |
| DOIs | |
| Publication status | Published - 1 Jan 1997 |