The introductory reviews and up-to-date research reports presented in this volume provide an overview of current activity in the field of localization and confinement of electrons in semiconductors. The discussion of the integer and fractional quantum Hall effects and the future impact of confined electron systems on device physics will be of particular interest.

Inhalt
I Quantum Boxes and Quantum Wires.- Quantum Boxes, Quantum Wires, and In-Plane Superlattices: Their Impact in Device Physics and Required Breakthroughs in Material Science.- Electron Confinement in Quantum Dots.- Quantum Dot Resonant Tunneling Spectroscopy.- Field-Effect Confined Electron Dots.- Quantum Confinement of Excitons by Strain Gradients.- Dynamic Excitations of Quantum Dots in AlGaAs-GaAs.- Inelastic Light Scattering by Electrons in Microstructured Quantum Wells.- Localization and Confinement of Electrons in Heterostructures by Focused-Ion-Beam Insulation-Writing.- Transport Through Single and Coupled Quantum Dots: The Formation of a Mini-Band Structure.- Controllable Scattering, Fabry-Pérot States and Quantum Coupling in Ballistic Devices.- II Localization and the Metal-Insulator Transition.- Localization and Transport of Disordered 2D Electrons in Strong Magnetic Fields.- Critical Behaviour of the Metal-Insulator Transition.- Photo-induced Metal-Insulator Transition in a Semiconductor.- Localization in Diluted Magnetic Semiconductors.- Spatially Correlated Occupancy of Resonant Donors.- The High-Frequency Properties of Mesoscopic Junctions.- III The Integer and Fractional Quantum Hall Effects and Electron-Electron Interactions.- Metal-Insulator Transition in the Integer Quantum Hall Effect.- The Spatial Potential Distribution in GaAs/Al xGa1x As Heterostructures Under Quantum Hall Conditions Studied with the Linear Electro-Optic Effect.- Recent Experimental Studies of the Integer and Fractional Quantum Hall Effects in Steady and Pulsed Magnetic Fields.- New Condensed States in the Fractional Quantum Hall Effect.- Experiments on the Nature of the Extreme Quantum Regime of a 2-D Electron System.- Electron States of Nearly Free, Uniform-Density, DiluteElectron Systems in Wide Parabolic Wells.- Density of States and Kinetic Coefficients of a Two-Dimensional Electron Gas in a Strong Magnetic Field.- IV Tunneling and Localization in Low-Dimensional Structures and Superlattices.- Coherence and Localization in Superlattices.- Tunneling Spectroscopy of Low-Dimensional States.- Magnetoresistance in One- and Two-Dimensional Lateral Surface Superlattices.- Extended and Localized States in Fibonacci Quasiperiodic Superlattices: A Probe of the Electronic Coherence.- Periodic Magnetic Field Induced Localization in Superlattices.- V Optical Properties of Confined Systems.- Isoelectronic Ultrathin Layers: A Probe for Heterostructure States.- Band-Gap Renormalization in Quantum Wells Studied with High Excitation Luminescence in High Magnetic Fields.- Excitons in Doped Quantum Wells.- Pseudomorphic In0.23Ga0.77As/GaAs Quantum Wells: Correlation of Anisotropic Lattice Relaxation and Degradation of Optical Properties.- VI Impurities in Quantum Well Structures.- Isolated Impurities, Impurity Bands and the Metal-Insulator Transition in Modulation-Doped Multiple-Quantum-Well Structures in Magnetic Fields.- Localized Conduction States due to Magneto-Acceptors in 2D Systems.- VII Optical and Magnetic Properties of Dilute Magnetic Semiconductor Quantum Well Structures.- Ultrafast Magnetic and Electronic Spectroscopy in Dilute Magnetic Semiconductor Quantum Wells.- Light-Induced Magnetization in Dilute Magnetic PbTe/PbMnTe Quantum Well Structures.- Index of Contributors.