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

Slizovskiy, Sergey, Betouras, Joseph J., Carr, S.T., Quintanilla, Jorge (2014) Effect of paramagnetic fluctuations on a Fermi-surface topological transition in two dimensions. Physical Review B, 90 (16). p. 165110. ISSN 1098-0121. (doi:10.1103/PhysRevB.90.165110)

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 light of our results.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevB.90.165110
Uncontrolled keywords: Physics of Quantum Materials
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Sam Carr
Date Deposited: 10 Nov 2014 12:47 UTC
Last Modified: 14 Feb 2020 04:06 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/44231 (The current URI for this page, for reference purposes)
Carr, S.T.: https://orcid.org/0000-0001-9995-4944
Quintanilla, Jorge: https://orcid.org/0000-0002-8572-730X
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