Extended Data Fig. 5: Electrostatic simulation for the four-probe contact configuration.
From: One-dimensional Luttinger liquids in a two-dimensional moiré lattice
a & b, Electric potential distribution for contact arrangements corresponding to Rhard and Reasy four-probe measurements respectively (see Methods). Black dots indicate current contacts that source/sink current. Red dots indicate the placement of voltage contacts. c, Predicted four-probe anisotropy β4p ≡ Rhard/Reasy as a function of the intrinsic sheet resistivity anisotropy βbulk. For β4p ≈ 1,000, we estimate βbulk ≈ 50.
