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Etude theorique des phases de densite inhomogene dans les systemes a effet Hall quantique

Abstract : The issue of this thesis is the study of the different electron-solid and quantum-liquid phases, which are found in two-dimensional electron systems under a perpendicular magnetic field. The formation of these phases is due to the strong Coulomb repulsion between the electrons of a partially filled Landau level. The energy calculations of the thesis allow one to understand recent experimental investigations, which have revealed a non-monotonic behaviour of the transverse (Hall) resistance. This effect is due to multiple first-order transitions between the competing phases. The derivation of a model of interacting composite fermions - the quasiparticles responsible for the fractional quantum Hall effect - furthermore allows for the study of new phases, which occur at high magnetic fields. Most saliently, a recently observed fractional quantum Hall effect at unusual values of the field has been identified as the manifestation of a second generation of composite fermions.
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Contributor : Mark Oliver Goerbig <>
Submitted on : Friday, October 8, 2004 - 7:07:11 PM
Last modification on : Wednesday, November 29, 2017 - 10:27:14 AM
Long-term archiving on: : Friday, April 2, 2010 - 8:49:20 PM


  • HAL Id : tel-00007072, version 1



Mark Oliver Goerbig. Etude theorique des phases de densite inhomogene dans les systemes a effet Hall quantique. Matière Condensée [cond-mat]. Université Paris Sud - Paris XI, 2004. Français. ⟨tel-00007072⟩



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