Fermi surface instabilities at finite Temperature

Abstract

We present a new method to detect Fermi surface instabilities for interacting systems at finite temperature. We first apply it to a list of cases studied previously, recovering already known results in a very economic way, and obtaining most of the information on the phase diagram analytically. As an example, in the continuum limit we obtain the critical temperature as an implicit function of the magnetic field and the chemical potential $T_c(\mu ,h)$. By applying the method to a model proposed to describe reentrant behavior in $S{r}_{3}R{u}_2{O}_7$, we reproduce the phase diagram obtained experimentally and show the presence of a non-Fermi Liquid region at temperatures above the nematic phase.

10 pages, 10 figures

References in corpus (18)

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Cited by in corpus (3)

• Revisiting the Fermi Surface in Density Functional Theory
• Pressure study of nematicity and quantum criticality in Sr${}_3$Ru${}_2$O${}_7$ for an in-plane field
• Pomeranchuk instabilities in holographic metals