This course is an extension of the introductory course on solid state physics.The purpose of this course is to learn to navigate the complex collective quantum phases, excitations and phase transitionsthat are the dominant theme in modern solid state physics. The emphasis is on the main concepts and on specific experimentalexamples, both classic ones and those from recent research.

This course is based on the principal modern tools used to study collective magnetic phenomena in the Solid State, namely correlation and response functions. It is quite quantitative, but doesn't contain any "fancy" mathematics. Instead, the theoretical aspects are balanced by numerous experimental examples and case studies. It is aimed at theorists and experimentalists alike.

This course covers the modern developments and problems in the field of solid state magnetism. It has the special emphasis on the phenomena that go beyond semiclassical approximation, such as quantum paramagnets, spin liquids and magnetic frustration. The course is aimed at both the experimentalists and theorists, and the theoretical concepts are balanced by the experimental data.