Semimagnetic Semiconductors and Diluted Magnetic Semiconductors (Ettore Majorana International Science Series, 55)

Semimagnetic semiconductors (SMSC) and diluted magnetic semiconductors (DMS) have in the past decade attracted considerable attention because they confer many new physical properties on both bulk materials and heterostructures. These new effects are due either to exchange interactions between magnetic moments on magnetic ions, or to exchange interactions between magnetic moments and the spin of the charge carrier. These effects vary with the transition metal (Mn, Fe, Co) or rare earth (Eu, Gd, etc) used and thus provide a range of different situations. The field is very large (zero gap, small gap, wide gap), and the magnetic properties also are very rich (paramagnetic spin glass, antiferromagnetism). These materials are very convenient for studying the magnetism (the magnetism is diluted) or the superlattices (SL) with a continuous change from type II SL to type III SL. This Course attempted to provide a complete overview of the topic. The participants of this summer school held in Erice came from ten countries and were from various backgrounds and included theoreticians, experimentalists, physicists, and chemists. Consequently, an attempt was made to make the Course as thorough as possible, but at the same time attention was devoted to basic principles. The lecturers, drawn from all the groups in the world involved in the field, were asked to be very didactic in their presentation. After two introductory lectures, Dr. Front Matter....Pages i-vii Background on Semimagnetic Semiconductors....Pages 1-22 Thermodynamics and Crystal Growth of Diluted Magnetic Semiconductors: “From the Atoms to the Crystals”....Pages 23-58 Band Structure and Theory of Magnetic Interactions in Diluted Magnetic Semiconductors....Pages 59-82 Transport Phenomena in Semimagnetic Semiconductors....Pages 83-119 Experimental Studies of the d-d Exchange Interactions in Dilute Magnetic Semiconductors....Pages 121-145 Bound Magnetic Polarons in Diluted Magnetic Semiconductors....Pages 147-168 Magnetooptic Properties of Wide Gap II 1-x Mn x VI Semimagnetic Semiconductors....Pages 169-190 II-Fe-VI Semimagnetic Semiconductors....Pages 191-208 Semimagnetic IV–VI Compound Semiconductors....Pages 209-236 Semimagnetic Semiconductor Superlattices....Pages 237-251 Magnetism of Fe-Based Diluted Magnetic Semiconductors....Pages 253-271 Back Matter....Pages 273-274