Nature Physics paper published on the 4-spin plaquette singlet state in a in a 2-D quantum material

Phase diagram of SrCu₂(BO₃)₂ as a function of pressure and temperature. 

With QM investigator Dr. Montu Saxena, a team of scientists led by colleagues at EPFL and the Paul Scherrer Institut have realized experimentally a new quantum many body state in a material representing a famous theoretical model called the "Shastry-Sutherland" model. The Shastry-Sutherland model is one of the few 2D models that have an exact theoretical solution, which represents the quantum pairwise entanglement of magnetic moments in a square lattice structure. When conceived, the Shastry-Sutherland model seemed an abstract theoretical construct, but remarkably it was discovered that this model is realized experimentally in the material SrCu₂(BO₃)₂. The work is published in Nature Physics. Read more here.(27/9/2017)