[Th-P2-E] Emergent Quantum Phases in 2D Materials

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[Th-P2-E-03] Quantized Heat Flow in the Hofstadter Butterfly

〇Aifei Zhang¹, Gibril Aissani², Quan Dong³, Yong Jin⁴, Kenji Watanabe⁵, Takashi Taniguchi⁶, Carles Altimiras¹, Patrice Roche¹, Jean-Marc Berroir², Emmanuel Baudin², Gwendal Fève², Gerbold Ménard², Olivier Maillet¹, François D Parmentier^1,2 (1. Université Paris-Saclay, CEA, CNRS, SPEC (France), 2. Laboratoire de Physique de l’Ecole normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris Cité (France), 3. CryoHEMT (France), 4. Université Paris-Saclay, CNRS, Centre de Nanosciences et de Nanotechnologies (C2N) (France), 5. Research Center for Electronic and Optical Materials, National Institute for Materials Science (Japan), 6. Research Center for Materials Nanoarchitectonics, National Institute for Materials Science (Japan))

We probe the heat transport properties of the Hofstadter butterfly, obtained in a graphene / hBN moiré superlattice. We observe a quantized heat flow for all investigated states of the Hofstadter butterfly: quantum Hall states, Chern insulators, and even symmetry-broken Chern insulators emerging from strong electronic interactions.