Extended Data Fig. 7: Conductance at CNP under in-plane and out-of-plane magnetic fields.

When a magnetic field is applied, a Zeeman gap is induced at the Dirac point of the edge states, influencing the edge conductance, which can be described by a thermal activation behaviour: \(G={G}_{0}{e}^{-g{\mu }_{{\rm{B}}}| B| /2{k}_{{\rm{B}}}T}\). Here, G₀ is the conductance at B = 0, g is the effective g-factor, μ_B is the Bohr magneton, and k_B is the Boltzmann constant. a,b, Raw data G versus B for both in-plane and out-of-plane magnetic fields. c,d, Corresponding \({\rm{ln}}(G/{G}_{0})\) versus μ_BB/k_BT, from the slope of which the g-factor can be directly extracted. The data was collected at T = 1.7 K.