Münster 1999 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 39: Symposium: Quanten Hall Systeme

HL 39.1: Fachvortrag

Freitag, 26. März 1999, 09:30–10:00, H1

Periodic Density Modulations for Composite Fermions: Evidence of Flux Attachment — •Smet Jurgen — Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart

Within the composite fermion model it is anticipated that a periodic modulation of the particle density in a two-dimensional electron system at half filled Landau level filling factor produces a periodic fictitious magnetic field by virtue of the flux attachment. The dc-transport properties in such modulated systems indeed confirm that composite fermions behave largely equivalent to electrons moving in a periodic magnetic field.
This work has been done in collaboration with K. von Klitzing, S. Jobst, D. Weiss, W. Wegscheider and V. Umansky.