Topological insulators are materials that conduct electricity on their surface while remaining insulating in their bulk. The quantum Hall effect is a phenomenon observed in two-dimensional electron systems subjected to low temperatures and strong magnetic fields, leading to quantized Hall conductance. To create a topological insulator, specific materials such as bismuth selenide or mercury telluride are utilized, often requiring precise fabrication techniques. Understanding these concepts is crucial for advancements in quantum computing and spintronics.
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