Phase coherence in the cotunneling regime of a coupled double quantum dot

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.12212

Sigrist, Martin ; Ihn, Thomas ; Ensslin, Klaus ; Reinwald, Matthias ; Wegscheider, Werner

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Veröffentlichungsdatum dieses Volltextes: 25 Jan 2010 13:31

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Low-temperature transport measurements were performed on a two-terminal Aharonov–Bohm interferometer with one Coulomb-blockaded quantum dot (QD) embedded in each of the two interfering paths. Layered local anodic oxidation of the Ga[Al]As heterostructure and a thin titanium top gate give full tunability of the inter-dot tunnel coupling from purely capacitive to the QD molecule regime and of the ...