Density of electronic states in density-wave compounds with imperfect nesting

A. V. Tsvetkova; Ya. I. Rodionov; P. D. Grigoriev

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arXiv · 2501.00341

Density of electronic states in density-wave compounds with imperfect nesting

A. V. Tsvetkova·Ya. I. Rodionov·P. D. Grigoriev

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Abstract

We study the effects of imperfect nesting in a simple 2D tight-binding model on the electronic properties in the density-wave (DW) state. The discussed model reflects the main features of quasi-1D metals, where the DW emerges. We show that an imperfect nesting leads to unusual singularities in the quasi-particle density of states, leading to a strong renormalization of the superconducting critical temperature. We also compute the conductivity tensor of the normal state and obtain a satisfactory agreement with the experimental data on rare-earth tritellurides and many other DW materials.

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A. V. Tsvetkova, Ya. I. Rodionov, P. D. Grigoriev. 2024-12-31. Density of electronic states in density-wave compounds with imperfect nesting. https://arxiv.org/abs/2501.00341

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