Sigrist, Martin and Ihn, Thomas and Ensslin, Klaus and Loss, Daniel and Reinwald, Matthias and Wegscheider, Werner (2006) Phase coherence in the Inelastic Cotunneling Regime. Physical Review Letters 96, 036804.
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Two quantum dots with tunable mutual tunnel coupling have been embedded in a two-terminal Aharonov-Bohm geometry. Aharonov-Bohm oscillations investigated in the cotunneling regime demonstrate coherent tunneling through nonresonant states. 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 is detected as a function of bias voltage at the inelastic cotunneling onset.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Projects:||nanoQUIT, SFB 631: Festkörperbasierte Quanteninformationsverarbeitung|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 21:02|