Extended Data Fig. 7: Negative dR/dT in R3G.
From: Fluctuating magnetism and Pomeranchuk effect in multilayer graphene
a, ne, D phase diagram at T = 6 K. b–e, Temperature-dependent resistance measurements for different densities and displacement fields. The different lines are colour-coded corresponding to the diamonds in panel a. A finite-temperature minimum is observed in the fluctuation regime, whereas such behaviour is absent if the ground state is symmetric in the isospin space.
