Magnetotransport in disordered delta-doped heterostructures

Abstract

We discuss theoretically how electrons confined to two dimensions in a delta-doped heterostructure can arrange themselves in a droplet-like spatial distribution due to disorder and screening effects when their density is low. We apply this droplet picture to magnetotransport and derive the expected dependence on electron density of several quantities relevant to this transport, in the regimes of weak and moderate magnetic fields. We find good qualitative and quantitative agreement between our calculations and recent experiments on delta-doped heterostructures.

10 pages RevTeX, 2 figures, uses psfrag; published version

References in corpus (3)

• Nonlinear screening and percolative transition in a two-dimensional electron liquid
• Modulation Doping near Mott-Insulator Heterojunctions
• Electrostatics of two-dimensional structures: exact solutions and approximate methods

Cited by in corpus (6)

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• Magnetic field induced Coulomb blockade in small disordered delta-doped heterostructures
• Spin polarization in modulation-doped GaAs quantum wires
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• Magnetic Field Induced Instabilities in Localised Two-Dimensional Electron Systems
• Variation of the hopping exponent in disordered silicon MOSFETs