Multiple flat bands and topological Hofstadter butterfly in twisted bilayer graphene close to the second magic angle
Xiaobo Lu, Biao Lian, Gaurav Chaudhary, Benjamin A. Piot, Giulio Romagnoli, Kenji Watanabe, Takashi Taniguchi, Martino Poggio, Allan H. MacDonald, B. Andrei Bernevig, Dmitri K. Efetov.
