| Autor: |
Duprez, Hadrien, Cances, Solenn, Omahen, Andraz, Masseroni, Michele, Ruckriegel, Max J., Adam, Christoph, Tong, Chuyao, Gerber, Jonas, Garreis, Rebekka, Huang, Wister, Gächter, Lisa, Taniguchi, Takashi, Watanabe, Kenji, Ihn, Thomas, Ensslin, Klaus |
| Rok vydání: |
2023 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| Popis: |
We measured the spectrum of a single-carrier bilayer graphene quantum dot as a function of both parallel and perpendicular magnetic fields, using a time-resolved charge detection technique that gives access to individual tunnel events. Thanks to our unprecedented energy resolution of 4$\mu~$eV, we could distinguish all four levels of the dot's first orbital, in particular in the range of magnetic fields where the first and second excited states cross ($B_\perp\lesssim 100~$mT). We thereby experimentally establish, the hitherto extrapolated, single-charge carrier spectrum picture and provide a new upper bound for the inter-valley mixing, equal to our energy resolution. |
| Databáze: |
arXiv |
| Externí odkaz: |
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