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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.

OriginalsprogEngelsk
TidsskriftPhysical Review B - Condensed Matter and Materials Physics
Vol/bind55
Udgave nummer19
Sider (fra-til)13118-13123
Antal sider6
ISSN1098-0121
DOI
StatusUdgivet - 1 jan. 1997

ID: 199597388