Niobium Phosphide: A New Ultrathin Conductor Outperforming Copper
2025-03-27
Stanford researchers have discovered a novel 1.5-nanometer-thick niobium phosphide (NbP) film exhibiting superior conductivity to copper. Unlike traditional metals, whose resistance increases at the nanoscale, NbP's resistance decreases with decreasing thickness due to its surface being more conductive than its bulk. This 'topological semimetal' behavior promises energy-efficient integrated circuits. However, challenges remain for commercialization, including precise film thickness control.
Tech
integrated circuits