Exploring Light-Induced Phenomena in Condensed Matter Physics within the Framework of Density-Functional Theory

Explore light-induced phenomena in condensed matter physics through a 51-minute lecture that delves into the framework of density-functional theory. Investigate the crucial role of light-matter interactions in condensed matter physics and their potential applications. Examine the photovoltaic effect for electricity generation and the use of polarized light for detecting and manipulating material states. Discover the computational challenges in understanding electron behavior induced by light in interacting many-body Hamiltonians. Learn about two fascinating light-driven phenomena studied using real-time time-dependent density functional theory: the giant bulk photovoltaic effect in WS2 nanotubes and the optoelectronic manifestation of orbital angular momentum in helical Se chains. Gain insights into how density functional theory, despite its approximations, aligns well with experimental findings and elucidates the origin of these properties. Understand the significance of this research in providing a tool to study light-induced properties using simplified approximations, offering valuable insights into the field of condensed matter physics.