Phase Diagram and SHG (IMAGE) National Institutes of Natural Sciences Caption Fig. 3. Schematic illustration of the SHG induced by a petahertz non-linear current in an organic superconductor κ- BEDT-TTF compounds. Credit NINS/IMS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.