Citation:
Dean CR, Wang L, Maher P, Forsythe C, Ghahari F, Gao Y, Katoch J, Ishigami M, Moon P, Koshino M, Taniguchi T, Watanabe K, Shepard KL, Hone J, Kim P. Hofstadter's butterfly and the fractal quantum Hall effect in moiré superlattices [Internet]. Nature 2013;497(7451):598–602.