Competition between intermediate plaquette phases in SrCu_2(BO_3)_2 under pressure

Building on the growing evidence based on NMR, magnetization, neutron scattering, ESR, and specific heat that, under pressure, SrCu_2(BO_3)_2 has an intermediate phase between the dimer and the N\'eel phase, we study the competition between two candidate phases in the context of a minimal model that includes two types of... Show more