Effect of paramagnetic fluctuations on a Fermi surface topological transition in two dimensions

Abstract

We study the Fermi surface topological transition of the pocket-opening type in a two dimensional Fermi liquid. We find that the paramagnetic fluctuations in an interacting Fermi liquid typically drive the transition first order at zero temperature. We first gain insight from a calculation using second order perturbation theory in the self-energy. This is valid for weak interaction and far from instabilities. We then extend the results to stronger interaction, using the self-consistent fluctuation approximation. Experimental signatures are given in the light of these results.

4.5 pages, 3 figures

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Cited by in corpus (7)

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• Effects of Lifshitz transitions in ferromagnetic superconductors: the case of URhGe
• Magnetic fluctuations and specific heat in NaxCoO2 near a Lifshitz topological transition
• Interaction-driven Lifshitz transition with dipolar fermions in optical lattices
• Second-order interaction corrections to the Fermi surface and the quasiparticle properties of dipolar fermions in three dimensions
• Nematic phase in a two-dimensional Hubbard model at weak coupling and finite temperature
• Brightening dark excitons and trions in systems with a Mexican-hat energy dispersion: example of InSe