High-Tc Superconductors Based on FeAs Compounds

Physical properties and models of electronic structure are analyzed for a newclass of high-TC superconductors which belong to iron-based layered compounds.Despite their variable chemical composition and differences in the crystal structure,these compounds possess similar physical characteristics, due to electroncarriers in the FeAs layers and the interaction of these carriers with fluctuations ofthe magnetic order. A tremendous interest towards these materials is explained bythe prospects of their practical use. In this monograph, a full picture of the formationof physical properties of these materials, in the context of existing theorymodels and electron structure studies, is given. The book is aimed at a broad circleof readers: physicists who study electronic properties of the FeAs compounds,chemists who synthesize them and specialists in the field of electronic structurecalculations in solids. It is helpful not only to researchers active in the fields of superconductivity and magnetism, but also for graduate and postgraduate students and all those who would like to get acquaintained with this vivid area of the materials science.