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Understanding the normal-metal state transport in twisted bilayer graphenenear magic angle is of fundamental importance as it provides insights into themechanisms responsible for the observed strongly correlated insulating andsuperconducting phases. Here we provide a rigorous theory for phonon-dominatedtransport in twisted bilayer graphene describing its unusual signatures in theresistivity (including the variation with electron density, temperature, andtwist angle) showing good quantitative agreement with recent experiments. Wecontrast this with the alternative Planckian dissipation mechanism that we showis incompatible with available experimental data. An accurate treatment of theelectron-phonon scattering requires us to go well beyond the usual treatment,including both interband and intraband processes, considering thefinite-temperature dynamical screening of the electron-phonon matrix element,and going beyond the linear Dirac dispersion. In addition to explaining theobservations in currently available experimental data, we make concretepredictions that can be tested in ongoing experiments.

Carrier transport theory for twisted bilayer graphene in the metallic regime