Manipulation of terahertz waves by work function engineering in metal-graphite structures
Manipulation of terahertz waves by work function engineering in metal-graphite structures
We manipulate the transient terahertz (THz) waves emitted from metal-graphite interfaces, where potential barriers were formed because of work function differences. To flip the phase of the THz waves, two distinct groups of metals were evaporated on n-type doped highly oriented pyrolytic graphite (HOPG): group A, which consisted of Pt, …