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Explore dephasing phenomena in quantum transport through this 18-minute lecture from the nanoHUB-U course "Fundamentals of Nanoelectronics Part B: Quantum Transport" taught by Supriyo Datta. Delve into advanced concepts of non-equilibrium statistical mechanics as they apply to nanotransistors, where active regions span just a few hundred atoms. Learn how dephasing affects quantum coherence in nanoelectronic devices and its implications for current flow on an atomic scale. Understand the fundamental physics behind the billion-plus nanotransistors that enable modern smartphone technology, while examining how quantum effects influence electrical transport in nanoscale systems. Gain insights into the interplay between quantum mechanics and classical transport phenomena, building upon concepts of quantized conductance and ballistic transport to explore how phase coherence is lost in real nanoelectronic devices.
