Contact Resistance: Strategies and Measurements

This lecture covers the concept of contact resistance in practice, including individual contact resistances, total resistance, and quantum resistance. It discusses the 4-probe technique and transmission line measurements for contact resistance. Strategies for reducing contact resistance, such as phase engineering, doping, and edge contacts, are explored. The lecture also delves into the direct transfer of contacts onto 2D materials and the extraction of Schottky barrier heights. Experimental reviews and quantum resistance in ballistic conductors are also highlighted.