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Learn about electron-hole double layer systems in this comprehensive physics lecture from the Boulder Summer School 2025. Explore the fundamental principles governing the behavior of spatially separated electron and hole layers, including their unique electronic properties, interaction mechanisms, and quantum phenomena. Delve into the theoretical framework describing these systems, examining how the Coulomb interaction between electrons and holes across different layers leads to fascinating many-body effects and collective excitations. Discover experimental techniques used to create and study electron-hole double layers, including optical spectroscopy methods and transport measurements. Investigate the formation of exciton condensates and other correlated phases that emerge in these systems under specific conditions. Analyze the role of layer separation, carrier density, and temperature in determining the ground state properties and phase transitions. Examine recent advances in van der Waals heterostructures and how they provide new platforms for realizing and controlling electron-hole double layer physics with unprecedented precision.
