Coherent-photon-assisted cotunneling in a Coulomb blockade device
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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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Number of pages||6|
|Publication status||Published - 1 Jan 1997|