EurekAlert May 14, 2020
To understand how plasmons operate in quasi 2D crystals an international team of researchers (USA – UC Berkeley, Lawrence Berkeley National Laboratory, research organization, Germany) characterized the properties of both nonconductive and conductive electrons in a monolayer of the TMD tantalum disulfide. Using the new algorithms they developed to compute the material’s electronic properties, they found the plasmons in quasi 2D TMDs are much more stable – for as long as approximately 2 picoseconds than previously thought. Their findings also suggest that plasmons generated by quasi 2D TMDs could enhance the intensity of light by more than 10 million times, opening the door for renewable chemistry or the engineering of electronic materials that can be controlled by light…read more. Open Access TECHNICAL ARTICLE
The plasmon waves are shown as concentric red and blue rings moving slowly across an atomically thin layer of tantalum disulfide. Credit: Felipe da Jornada/Berkeley Lab