de Vries, Folkert K. and Slizovskiy, Sergey and Tomić, Petar and Krishna Kumar, Roshan and Garcia-Ruiz, Aitor and Zheng, Giulia and Portolés, Elías and Ponomarenko, Leonid A. and Geim, Andre K. and Watanabe, Kenji and Taniguchi, Takashi and Fal’ko, Vladimir and Ensslin, Klaus and Ihn, Thomas and Rickhaus, Peter (2024) Kagome Quantum Oscillations in Graphene Superlattices. Nano Letters, 24 (2). pp. 601-606. ISSN 1530-6984
Full text not available from this repository.Abstract
Electronic spectra of solids subjected to a magnetic field are often discussed in terms of Landau levels and Hofstadter-butterfly-style Brown–Zak minibands manifested by magneto-oscillations in two-dimensional electron systems. Here, we present the semiclassical precursors of these quantum magneto-oscillations which appear in graphene superlattices at low magnetic field near the Lifshitz transitions and persist at elevated temperatures. These oscillations originate from Aharonov–Bohm interference of electron waves following open trajectories that belong to a kagome-shaped network of paths characteristic for Lifshitz transitions in the moire superlattice minibands of twistronic graphenes.