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arXiv · 1905.09941

First order Fermi surface topological (Lifshitz) transition in an interacting two-dimensional Rashba Fermi liquid

Yury Sherkunov·Joseph J. Betouras
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Abstract

We study the Fermi surface topological transition of the pocket-opening type in a two dimensional Fermi liquid with spin-orbit coupling of Rashba type. We find that the interactions, far from instabilities, drive the transition first order at zero temperature surprisingly in a more pronounced way than in the case of interacting Fermi liquid without spin-orbit coupling. We first gain insight from second order perturbation theory in the self-energy. We then extend the results to stronger interaction, using the self-consistent fluctuation approximation. We discuss existing experimental work on the system BiTeI and suggest further experiments in the light of these results .

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Yury Sherkunov, Joseph J. Betouras. 2019-05-23. First order Fermi surface topological (Lifshitz) transition in an interacting two-dimensional Rashba Fermi liquid. https://arxiv.org/abs/1905.09941

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