Phase coherence in the inelastic cotunneling regime

Abstract

Two quantum dots with tunable mutual tunnel coupling have been embedded in a two-terminal Aharonov-Bohm geometry. Aharonov-Bohm oscillations are investigated in the cotunneling regime. Visibilities of more than 0.8 are measured indicating that phase-coherent processes are involved in the elastic and inelastic cotunneling. An oscillation-phase change of pi is detected as a function of bias voltage at the inelastic cotunneling onset.

4 pages, 4 figures

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• Do intradot electron-electron interactions induce dephasing?
• Reply to the comment on "Do intradot electron-electron interactions induce dephasing?"
• Comment on "Do Intradot Electron-Electron Interactions Induce Dephasing?"

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