Localization and Confinement of Electrons in Semiconductors: Proceedings of the Sixth International Winter School, Mauterndorf, Austria, February 19–23, 1990

ISBN-13: 9783642842740 / Angielski / Miękka / 2012 / 353 str.

Friedemar Kuchar;Helmut Heinrich;Günther Bauer

Opis

The winter school on Localization and Confinement of Electrons in Semicon- ductors was the sixth of a series dealing with new developments in solid state physics organized by the Austrian Physical Society. The school, which was held in the castle of Mautemdorf, in the federal province of Salzburg, Austria, February 19-23, 1990, was attended by about 200 participants. This is the fourth such winter school to have the proceedings published in the Springer Series in Solid-State Sciences, the earlier ones appearing as Vols. 53, 67 and 83. The contributions of the invited speakers are arranged in seven parts according to topic: quantum boxes and quantum wires; localization and the metal-insulator transition; the integer and fractional quantum Hall effects and electron-electron interactions; tunneling and localization in low-dimensional structures and superlattices; optical properties of confined systems; impurities in quantum well structures; and optical and magnetic properties of dilute mag- netic semiconductor quantum well. structures. A particular intention of this book is to present relevant introductory articles alongside the most recent research reports, all written by experts in the fields of localization and condensation of electrons in semiconductors, the quantum Hall effect, lateral superlattices, ballistic transport, etc. The fascinating subject of quantum boxes (dots) and quantum wires is treated in considerable detail. Experimental techniques for producing later- ally structured two-dimensional electron gas systems are described together with methods for studying their electrical and optical properties.

Spis treści

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 xGa1—x 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, Dilute Electron 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.

O autorze

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.