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Interaction-driven spectrum reconstruction in bilayer graphene

Falko contributed to formulating the idea of the experiment, interpreted the data with his PhD student, and he co-wrote the paper. He demonstrated theoretically how the Lifshitz transition in bilayer graphene, caused by strain and nematic phase transition, is manifested in the Shoubnikov-de-Haas oscillations and magnetic-field-dependence of inter-Landau-level gaps. The technical details of his theory are in Supplementary Information, and a sequence of theoretically calculated electron dispersions illustrating a topological transition in the band structure developing upon increasing strain (or nematic order parameter) was selected by the Editors for the cover page of the corresponding Science Issue.