Hofstadter’s butterfly and the fractal quantum Hall effect in moiré superlattices

C. R. Dean, L. Wang, P. Maher, C. Forsythe, F. Ghahari, Y. Gao, J. Katoch, M. Ishigami, P. Moon, M. Koshino, T. Taniguchi, K. Watanabe, K. L. Shepard, J. Hone and P. Kim ()
Additional contact information
C. R. Dean: The City College of New York
L. Wang: Columbia University
P. Maher: Columbia University
C. Forsythe: Columbia University
F. Ghahari: Columbia University
Y. Gao: Columbia University
J. Katoch: University of Central Florida
M. Ishigami: University of Central Florida
P. Moon: Tohoku University, Sendai 980-8578, Japan
M. Koshino: Tohoku University, Sendai 980-8578, Japan
T. Taniguchi: National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
K. Watanabe: National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
K. L. Shepard: Columbia University
J. Hone: Columbia University
P. Kim: Columbia University

Nature, 2013, vol. 497, issue 7451, 598-602

Abstract: Moiré superlattices arising in bilayer graphene coupled to hexagonal boron nitride provide a periodic potential modulation on a length scale ideally suited to studying the fractal features of the Hofstadter energy spectrum in large magnetic fields.

Date: 2013
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DOI: 10.1038/nature12186

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