Extended Data Fig. 4: Comparison of the response to the vertical and parallel magnetic field focusing around D = 0.
From: Spontaneous broken-symmetry insulator and metals in tetralayer rhombohedral graphene
a, ρxx − D plot at B = 0 T; B⊥ = 0 T, B// = 12 T and B⊥ = 12 T, B// = 0 T. b, ρxx − n plot at B⊥ = 4 T, B// = 11 T and B⊥ = 4 T, B// = 0 T. Both data show parallel magnetic field have little influence on the correlated insulator state around CNP. A rotating probe is used to relatively change the direction of magnetic field. According to the measurement of Hall resistance, pure in-plane or out of plane magnetic field (error within 0.1°) can be applied to sample.
