New Technique: Physicists generate terahertz waves with spin current flow

Terahertz waves are often used in the checking of passengers and luggage at the airport. They are also in demand in other areas, such as for materials testing in the industry. Physicists have now developed a new method for generating such waves. They use a quantum magnetic current flow, so-called spin current, in magnetic metal nanostructures. The cost-effective and material-saving technology has the potential for industry applications.