SPICE Workshop on Unconventional Superconductors and Magnets May 12th - 14th, 2026
Roser Valenti
In magic angle twisted bilayer graphene, transport, thermodynamic and spectroscopic experiments pinpoint to a competition between distinct low-energy states with and without electronic order, as well as a competition between localized and delocalized charge carriers. In this talk I will discuss these observations in the context of a heavy fermion-like description. We will show [1-4] through a combination of Hartree-Fock and Dynamical Mean Field Theory that such a heavy fermion picture is able to describe in a unified way many of the experimentally observed complex orders in these materials.
[1] Hu et al. Phys. Rev. Lett. 131, 166501 (2023)[2] Rai et al. Phys. Rev. X 14, 031045 (2024)
[3] Crippa et al. arXiv:2509.19436
[4] Kim et al. Nature 650, 592 (2026)