Energy relaxation in impurity metals, a two-dimensional electron gas in Al. GaAs/Ga. As, NbN superconducting films and e" by Chulkov G. M. , Korneeva A. A. , Smirnova K. In. and others is a unique study that immerses the reader in the world of solid state physics and materials science. This work is addressed to both specialists in the field of physics and materials science, and students interested in modern technologies and their application in science. The book examines key aspects of energy relaxation in various systems, such as impurity metals, two-dimensional electron gases, and superconducting films. The authors analyze in detail the processes taking place at the quantum level, and offer the reader a look at the mechanisms that determine the behavior of materials under various external influences. This study not only expands the horizons of understanding physical phenomena, but also opens up new perspectives for the development of high-tech devices and materials. Who can like this work? First of all, the book will be of interest to students and graduate students studying physics, materials science and related disciplines . Researchers and practicing scientists working in the field of semiconductors and superconductors will also find a lot of useful information in it. In addition, the book can attract the attention of engineers and developers engaged in the creation of new technologies based on the materials studied. The topics raised in the book cover a wide range of issues, including the physics of quantum phenomena, the properties of materials and their application in modern technologies. The authors highlight the importance of understanding energy relaxation to develop efficient and reliable devices such as transistors, lasers, and superconducting magnets. This makes the book relevant not only for theorists, but also for practitioners seeking to introduce new ideas into real life. The style of the authors is distinguished by clarity and accessibility, which allows even complex concepts are presented in an understandable form. Chulkov G. M. , Korneev A. A. and Smirnov K. In. are not only authors, but also recognized experts in their field, which gives additional value to their work Their previous work has also been marked by a high level of scientific rigor and originality, making this book a logical continuation of their research activities. Energy relaxation in impurity metals, a two-dimensional electron gas in Al. GaAs/Ga. As, superconducting films NbN and d" will be an indispensable tool for anyone interested in solid state physics and modern materials. It not only deepens knowledge in this area, but also inspires new research and discoveries. Readers seeking to understand how physical laws affect technology will find in this book many ideas and concepts that can form the basis for their own scientific research. If you are looking for a deep and meaningful study that combines theory and practice, then this work should definitely take its rightful place on your shelf. Do not miss the opportunity to immerse yourself in the world of high technologies and discoveries that can change our understanding of materials and their capabilities.