Non-Fermi Liquids in Conducting Two-Dimensional Networks

We explore the physics of novel fermion liquids emerging from conducting networks, where 1D metallic wires form a periodic 2D superstructure. Such structure naturally appears in marginally twisted bilayer graphenes, moire transition metal dichalcogenides, and also in some charge-density wave materials. For these network systems, we theoretically show that a remarkably wide variety of new non-Fermi liquids emerge and that these non-Fermi liquids can be classified by the characteristics of the junctions in networks. Using this, we calculate the electric conductivity of the non-Fermi liquids as a function of temperature, which show markedly different scaling behaviors than a regular 2D Fermi liquid.

Automated summary

The study reveals that novel fermion liquids emerging from conducting networks exhibit a wide variety of non-Fermi liquid phenomena, which can be classified based on the characteristics of junctions in the network. The electric conductivity of these non-Fermi liquids shows markedly different scaling behaviors with temperature compared to a regular 2D Fermi liquid.