Holographic aspects of Fermi liquids in a background magnetic field

We study the effects of an external magnetic field on the properties of the quasiparticle spectrum of the class of (2 + 1)-dimensional strongly coupled theories holographically dual to charged AdS(4) black holes at zero temperature. We uncover several interesting features. At certain values of the magnetic field, there are multiple quasiparticle peaks representing a novel level structure of the associated Fermi surfaces. Furthermore, increasing magnetic field deforms the dispersion characteristics of the quasiparticle peaks from non-Landau towards Landau behaviour. At a certain value of the magnetic field, just at the onset of Landau-like behaviour of the Fermi liquid, the quasiparticles and Fermi surface disappear.