Condensed matter physics is a broader field that includes the study of all condensed phases of matter, including solids, liquids, and gases. In addition to the topics studied in solid state physics, condensed matter physics also includes the study of superfluids, superconductors, and other exotic states of matter.
The main difference between solid state physics and condensed matter physics is the scope of the field. Solid state physics is focused specifically on the study of solid materials, while condensed matter physics includes the study of all condensed phases of matter. This difference is reflected in the topics that are studied in each field. Solid state physics tends to focus on the electronic structure and properties of solids, while condensed matter physics includes a wider range of topics, such as the behavior of superfluids and superconductors.
Despite the differences in scope, solid state physics and condensed matter physics are closely related fields. Many of the concepts and techniques that are used in solid state physics are also used in condensed matter physics. In addition, many of the researchers who work in solid state physics also work in condensed matter physics.
