Non-analytic magnetic field dependence of quasi-particle properties of two-dimensional metals

Casper Drukier (), Philipp Lange and Peter Kopietz

The European Physical Journal B: Condensed Matter and Complex Systems, 2015, vol. 88, issue 2, 1-11

Abstract: We show that in a weak external magnetic field H the quasi-particle residue and the renormalized electron Landé factor of two-dimensional Fermi liquids exhibit a non-analytic magnetic field dependence proportional to | H | which is due to electron-electron interactions and the Zeeman effect. We explicitly calculate the corresponding prefactors to second order in the interaction and show that they are determined by low-energy scattering processes involving only momenta close to the Fermi surface. These non-analytic terms appear in measurable quantities such as the density of states and the magnetoconductivity. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1140/epjb/e2014-50779-6

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