Lectures On Hyperfine Interactions A Field Between Nuclear Physics And Solid State Physics

This volume of proceedings includes new and original scientific results along with recent developments in instrumentation and methods, in invited and contributed papers. Researchers and graduate students interested in hyperfine interaction detected by nuclear radiation as well as nuclear quadrupole interactions detected by resonance methods in the areas of materials, biological and medical science will find this volume indispensable.

This book presents the various types of resonance effects on excitons, biexcitons and the local electronic centers (LEC) in solids, such as paramagnetic and paraelectric resonances on excitons, exciton acoustic resonance at intra- and interband transitions, radio-optical double resonance on excitons, hole-nuclear double resonance on localized biexcitons, ENDOR and acoustic ENDOR on LEC. The criteria for the generation of coherent photons, phonons and magnons by excitons are explained. The interactions of excitons and biexcitons with paramagnetic centers and nuclear spins, the indirect interaction between the PC through a field of excitons as well as the quasienergy spectrum of excitons and spin systems are discussed. It is proved that the interaction of paramagnetic centers with excitons increases the spin relaxation rate of paramagnetic centers in comparison with the case of their interaction with free carriers. The giant magneto-optical effects in semi-magnetic semiconductors are theoretically interpreted. In recent years, a new perspective has been added to these systems and their interactions: They can be used for storing and processing information in the form of quantum bits (qubits), the building blocks of quantum computers. The basics of this emerging technology are explained and examples of demonstration-type quantum computers based on localized spins in solids are discussed.

The first of two volumes presenting an overview of the important research areas in which Professor H. Überall has done his life's work and constitutes a festschrift for this distinguished physicist. Each chapter is intended to serve as a bridge between advanced textbooks and the most recent research literature, thereby providing a valuable reference for active researchers as well as for graduate students.