Solid state refers to the physical properties of solid materials, such as their crystalline structure and electrical conductivity. Condensed matter includes both solid and liquid materials, and encompasses their physical properties as well as their behavior at the molecular level.
Some common topics covered in these books include crystal structure, electronic properties of solids, phase transitions, and quantum mechanics in condensed matter systems. Other topics may include surface and interface physics, defects and impurities in materials, and applications of solid state physics in technology.
Some commonly recommended textbooks in this area include "Solid State Physics" by Neil W. Ashcroft and N. David Mermin, "Introduction to Solid State Physics" by Charles Kittel, and "Condensed Matter Physics" by Michael P. Marder. However, the best textbook for an individual will depend on their specific interests and background knowledge.
Solid state/condensed matter physics has applications in many other fields of science, including chemistry, materials science, and engineering. It also has connections to other branches of physics, such as quantum mechanics and statistical mechanics, as well as interdisciplinary fields like biophysics and nanoscience.
Yes, there are many ongoing developments and advancements in this field. Some notable examples include the discovery of topological insulators, which are materials that conduct electricity only on their surface; the development of new materials with potential for use in quantum computing; and the progress made in understanding and controlling the properties of 2D materials like graphene and MoS2.