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arXiv · 2402.10878

A model of non-Fermi liquid with power law resistivity: strange metal with a not-so-strange origin

Patrick A. Lee
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Abstract

We construct a model which exhibits resistivity going as a power law in temperature $T$, as $T^\alpha$ down to the lowest temperature. There is no residual resistivity because we assume the absence of disorder and momentum relaxation is due to umklapp scattering. Our model consists of a quantum spin liquid state with spinon Fermi surface and a hole Fermi surface made out of doped holes. The key ingredient is a set of singular $2k_F$ modes living on a ring in momentum space. Depending on parameters, $\alpha$ may be unity (strange metal) or even smaller. The model may be applicable to a doped organic compound, which has been found to exhibit linear T resistivity. We conclude that it is possible to obtain strange metal behavior starting with a model which is not so strange.

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Patrick A. Lee. 2024-02-16. A model of non-Fermi liquid with power law resistivity: strange metal with a not-so-strange origin. https://arxiv.org/abs/2402.10878

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