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arXiv · 2009.02336

Non-Fermi Liquids in Conducting 2D Networks

Jongjun M. Lee·Masaki Oshikawa·Gil Young Cho
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Abstract

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.

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Jongjun M. Lee, Masaki Oshikawa, Gil Young Cho. 2020-09-04. Non-Fermi Liquids in Conducting 2D Networks. https://doi.org/10.1103/physrevlett.126.186601

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