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arXiv · 1309.6969

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

Sergey Slizovskiy·Joseph J. Betouras·Sam T. Carr·Jorge Quintanilla
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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.

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Sergey Slizovskiy, Joseph J. Betouras, Sam T. Carr, Jorge Quintanilla. 2013-09-26. Effect of paramagnetic fluctuations on a Fermi surface topological transition in two dimensions. https://doi.org/10.1103/physrevb.90.165110

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