New quantum material, 2D material (IMAGE) Uppsala University Caption The new quantum material, synthesised in the Columbia University laboratory, is unique as it has a 2D-like crystal structure with clearly separated, atom-thin layers. The layers consist of cerium, silicon and iodine (CeSiI) and are the first example of a 2D material with heavy fermions. The studi is headed by Uppsala University Credit Chin-Shen Ong, Uppsala University Usage Restrictions Credit must be given to the creator. License CC BY 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.