This volume contains contributions presented at the International Conference "The Application of High Magnetic Fields in Semiconductor Physics", which was held at the University of Wiirzburg from August 22 to 26, 1988. In the tradition of previous Wiirzburg meetings on the subject - the first conference was held in 1972 - only invited papers were presented orally. All 42 lecturers were asked to review their subject to some extent so that this book gives a good overview of the present state of the respective topic. A look at the contents shows that the subjects which have been treated at previous conferences have not lost their relevance. On the contrary, the application of high magnetic fields to semiconductors has grown substantially during the recent past. For the elucidation of the electronic band structure of semicon­ ductors high magnetic fields are still an indispensable tool. The investigation of two-dimensional electronic systems especially is frequently connected with the use of high magnetic fields. The reason for this is that a high B-field adds angular momentum quantization to the boundary quantization present in het­ erostructures and superlattices. A glance at the contributions shows that the majority deal with 2D properties. Special emphasis was on the integral and fractional quantum Hall effect. Very recent results related to the observation of a fraction with an even denbminator were presented. It became obvious that the polarization of the different fractional Landau levels is more complicated than originally anticipated.

Inhalt

I Integral Quantum Hall Effect, Electronic States in High Magnetic Fields.- Universality and Scaling of Electronic Transport in the Integral Quantum Hall Effect.- Scaling and the Integer Quantum Hall Effect.- Density of States and Coulomb Interactions in the Integer Quantum Hall Effect.- Electronic States in Two-Dimensional Random Systems in the Presence of a Strong Magnetic Field.- Conductance Fluctuations on the Quantum Hall Plateaus in GaAs/AlGaAs.- Quantum Hall Effect and Related Magneto-transport in Silicon (001) MOSFETs Under Uniaxial Stress.- Effect of Additional Irradiation Induced Scattering Centres on the Quantum Hall Plateau Widths in GaAs-AlxGa1?xAs Heterostructures.- On the Effect of the Coulomb Interaction in the Quantum Hall Regime.- Structures in the Breakdown Curves of the Quantum Hall Effect in Narrow Channel GaAs/AlGaAs Heterostructures.- Quantum Hall Effect in Wide Parabolic GaAs/AlxGa1?xAs Wells.- Correlation Between Magnetotransport and Photoluminescence in the Quantum Hall Effect Regime.- The Influence of Contacts on the Quantized Hall Effect.- On the Consistency of Approximations to the Landau-Level Broadening by Random Potentials with Large Correlation Length.- Collective Excitations of Two-Dimensional Electron Solids and Correlated Quantum Liquids in High Magnetic Fields.- Many-Valley 2D Electron Systems in Strong Magnetic Fields.- Interaction of Surface Acoustic Waves with Inversion Electrons on GaAs in Quantizing Magnetic Fields.- II Fractional Quantum Hall Effect.- The Fractional Quantum Hall Effect at Even Denominators.- The Influence of Coulomb Interactions on a 2DEG in High Magnetic Fields.- Experimental Determination of Fractional Charge e/q in the FQHE and Its Application to the Destruction of States.- Experimental ?xx vs. ?xy Scaling Diagram of the Fractional Quantum Hall Effect.- The Spin Configuration of Fractional QHE Ground States in the N=0 Landau Level.- The Fractional Quantum Hall Effect with an Added Parallel Magnetic Field.- Plateau Formation by Force from Pinning Centres in the Fractional Quantum Hall Effect.- Different Behaviour of Integral and Fractional Quantum Hall Plateaus in GaAs-AlxGa1?xAs Heterostructures Under Back-Gating and Illumination.- Temperature Dependence of Transport Coefficients of 2D Electron Systems at Very Small Filling Factors.- Electron Solid Formation at a Modulation Doped Heterojunction in a High Magnetic Field.- III Heterostructures and Superlattices: Transport and Electronic Structure.- Magnetic Oscillation of Many-Body Effects in Two-Dimensional Systems.- n-i-p-i Doping Superlattices Under High Magnetic Fields.- Hot Electron Magnetotransport in AlxGa1?xAs-GaAs Samples of Different Geometry.- p-Type GaAs-(GaAl)As Heterostructures in Tilted Magnetic Fields: Theory and Experiments.- Tilted Field Magnetotransport Experiments on Germanium Bicrystals.- Parallel and Perpendicular Field Magnetotransport Studies of MBE Grown GaAs Doping Superlattices and Slab Doped InSb Formed by Selective Doping with Silicon.- Magnetotransport on HgTe/CdTe Superlattices Grown by LAMBE.- Quantized Particle Motion in High Magnetic Fields.- Connection Between Low and High Temperature Magneto-transport Measurements in GaAs/GaAlAs Heterojunctions.- Hybrid Magneto-electric Quantisation in Quasi-2D Systems.- IV Heterostructures and Superlattices: Optics.- Classification of Magneto-excitons in Quantum Wells.- Mixing of Magnetoexcitons in Quantum Wells.- High Magnetic Fields as a Tool to Study the Optical Properties of Quantum Wells and Superlattices.- Far Infrared Magneto-optical Studies of Shallow Impurities in GaAs/AlGaAs Multiple-Quantum-Well Structures.- The H-Band Luminescence of p-Type GaAs-(GaAl)As Heterostructures in High Magnetic Fields.- Spectral Blue-Shifts in Optical Absorption and Emission of the 2D Electron System in the Magnetic Quantum Limit.- Resonant-Subband Landau-Level Coupling in a Two-Dimensional Electronic System: Depolarization Effect and Dependence on Carrier Density.- Quasi-Two-Dimensional Shallow Donors in a High Magnetic Field.- Two-Dimensional Magnetoplasmons in Gated AlxGa1?xAs-GaAs Heterojunctions.- Magneto-optical Study of Excitons Localized Around 2D Defects of BiI3 in Pulsed High Magnetic Fields up to 47T.- Magneto-optical and Magneto-transport Investigations of a Wide Modulation Doped (InGa)As/InP Quantum Well.- Temperature and Magnetic Field Dependence of the Lifetime of Resonantly Excited 2D Carriers in Magnetic Fields up to 25 T Studied Using Picosecond Time-Resolved Photoluminescence.- New Magnetically Tunable Far-Infrared Solid State Lasers.- V Tunneling in Heterostructures.- Resonant Tunnelling Devices in a Quantising Magnetic Field.- A Wigner Function Study of Magnetotunneling.- Surface-Field Induced InAs Tunnel Junctions in High Magnetic Fields.- VI Transport in Submicron Structures.- Magnetoconductance in Lateral Surface Superlattices.- Conductance Fluctuation Phenomena in Submicron Width High Mobility GaAs/AlGaAs Heterojunctions.- New Magnetotransport Phenomenon in a Two-Dimensional Electron Gas in the Presence of a Weak Periodic Submicrometer Potential.- Quantisation of Resistance in One-Dimensional Ballistic Transport.- Influence of Magnetic Fields on Ballistic Transport in Narrow Constrictions.- VII Spin Effects, Cyclotron Resonance in 2D and 3D Systems.- Spin-Splitting in Structured Semiconductors.- Electron Spin Resonance in the Two-Dimensional Electron Gas of GaAs-AlGaAs Heterostructures.- Overhauser-Shift of the ESR in the Two-Dimensional Electron Gas of GaAs-AlGaAs Heterostructures.- Combined Resonance in Systems of Different Dimensionality.- Recent Cyclotron Resonance Work.- Influence of Repulsive Scatterers on the Cyclotron Resonance in Two-Dimensional Electron Systems with Controlled Acceptor Impurity Concentration.- Cyclotron Resonance in GaAs/AlGaAs Heterojunctions.- Non-parabolicity as a Cause of Oscillations in 2D Cyclotron Resonance.- Magnetoconductivity of n-GaAs/Ga1?xAlxAs Heterojunctions in Strong Transverse Electric Fields.- On the Halfwidth of the Cyclotron Resonance Line in Semiconductors.- Magneto-transport and Magneto-optical Studies in a Quasi-Three-Dimensional Modulation-Doped Semiconductor Structure.- Ns-Dependent Polaron Effects in GaAs-(Ga,AI)As Heterojunctions.- Polarons in 2D-Systems Subjected to a Magnetic Field.- VIII Semimagnetic Semiconductors, 2D and 3D.- Magneto-optic P…