Alexina Ollier (Swiss Nanoscience Institut)
We report on a low temperature (T=5K) measurement of striking singlets or multiplets of dissipation peaks above graphene nanodrums surface. The stress present in the structure leads to formation of few nanometre size graphene wrinkles and the observed dissipation peaks are attributed to tip-induced charge states transitions in quantum-dot-like entities. The dissipation peaks strongly depend on the external magnetic field (B=0T-2T). The magnetic field induce Peierls phase that shift the peaks to lower energy. At large magnetic field this shift induces the vanishing of the peaks.
Alexina Ollier (Swiss Nanoscience Institut) Dr Ali Khosravi (SISSA) Prof. Erio Tosatti (SISSA) Prof. Ernst Meyer (University of Basel) Dr Marcin Kisiel (University of Basel) Dr Rémi Pawlak (University of Basel) Dr Urs Gysin (University of Basel)