Shubnikov–de Haas oscillations reaching the quantum limit in two-dimensional electron systems at SrTiO3 (111) interfacesRemoveZiqiao Wang, Autumn Heltman, Shalini Kumari, Lunhui Hu, Zhu Lin, Rojin Taheri, Leixin Miao, Nasim Alem, Lin Jiao, Shalinee Chikara, Alexey Suslov, John Singleton, Fedor Balakirev, Chaoxing Liu, and Qi LiPhys. Rev. B 112, 035153 (2025)