@article{nuckolls, title = {Spectroscopy of the fractal Hofstadter energy spectrum}, author = {Kevin P. Nuckolls, Michael G. Scheer, Dillon Wong, Myungchul Oh, Ryan L. Lee, Jonah Herzog-Arbeitman, Kenji Watanabe, Takashi Taniguchi, Biao Lian, Ali Yazdani}, publisher = {Springer Science and Business Media LLC}, year = {2025}, keywords = {Hofstadter's butterfly, Twisted bilayer graphene (TBG), Scanning tunnelling microscopy/spectroscopy (STM/STS)} }