Systematic analysis of the many-body ground state of magic-angle twisted bilayer graphene

Magic-angle twisted bilayer graphene (MATBG) has attracted considerable attention due to its rich landscape of correlated phases, including superconductivity, correlated insulators, and non-Fermi-liquid behavior. However, despite extensive experimental studies, a fully reproducible and systematic phase diagram of MATBG remains elusive, primarly due to strong device-to-device variability. In this work, we address this challenge by performing a systematic analysis of electrical transport data collected over several years across many TBG devices fabricated near the magic angle as well as at larger twist angles. Leveraging the recent theoretical insights from the topological heavy fermion model, we systematically analyze this extensive dataset to identify robust, device-independent features of the many-body ground state. Our analysis promises to address the still open questions in MATBG research and construct a comprehensive and reproducible phase diagram.