TY - RPRT TI - Fractional quantization in insulators from Hall to Chern AU - Bernevig, B. A. [Princeton University, NJ (United States); Donostia International Physics Center (Spain); IKERBASQUE, Basque Foundation for Science, Bilbao (Spain)] (ORCID:0000000163374024) AU - Fu, Liang [Massachusetts Institute of Technology, Cambridge, MA (United States)] (ORCID:0000000288031017) AU - Ju, Long [Massachusetts Institute of Technology, Cambridge, MA (United States)] (ORCID:0000000246911315) AU - MacDonald, A. H. [University of Texas at Austin, TX (United States)] (ORCID:0000000335613379) AU - Mak, Kin Fai [Max Planck Institute for the Structure and Dynamics of Matter, Hamburg (Germany); Cornell University, Ithaca, NY (United States); Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY (United States)] (ORCID:000000025768199X) AU - Shan, Jie [Max Planck Institute for the Structure and Dynamics of Matter, Hamburg (Germany); Cornell University, Ithaca, NY (United States); Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY (United States)] (ORCID:0000000312709386) PY - 2025 DO - 10.1038/s41567-025-03072-8 UR - https://www.osti.gov/biblio/3365460 ID - 3365460 ER -