Hall Conductivity in the presence of repulsive magnetic impurities
Laboratoire de Physique Théorique et Modèles Statistiques,
Université Paris-Sud, 91406 Orsay Cedex,
Accepted: 21 December 1998
Published online: 15 February 1999
The Hall conductivity of disordered magnetic systems consisting of hard-core point vortices randomly dropped on the plane with a Poissonian distribution, has a behavior analogous to the one observed experimentally by Haug, Gerhardts, Klitzling and Ploog, with repulsive scatterers [CITE]. We also argue that models of homogeneous magnetic field with disordered potential, have necessarily vanishing Hall conductivities when their Hilbert space is restricted to a given Landau level subspace.
PACS: 05.30.-d – Quantum statistical mechanics / 05.40.+j – Fluctuation phenomena, random processes, and Brownian motion / 11.10.-z – Field theory
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999