Fig. 1: Pictorial illustration of one of the dimer-singlet states.
From: A resonant valence bond spin liquid in the dilute limit of doped frustrated Mott insulators
These states participate in the superposition forming the RVB liquid ground state of the t–J model, equation (1), on a lattice of corner-sharing tetrahedra. Singlets are indicated by dark thin ellipsoids. A holon at a given location is indicated by a light sphere. The π-fluxes depict the phase induced by the singlet coverings (relative to a ferromagnetic background) when the holon moves around the corresponding triangular plaquette. Inset, an Y2Ir2O7 pyrochlore crystal grown by D. Prabhakaran in Oxford.
