Abstract
Motivated by the controversy on the pairing symmetry of layered organic superconductors, we study electronic Raman scattering spectra on a frustrating lattice. A two-dimensional t-t′-J-J′ model and the Gutzwiller projectional variational method is used. The pairing symmetry is obtained self-consistently. Basing on this, we perform a systematic investigation of the density of states and electronic Raman spectra as a function of t′/t: ranging from t′ = 0, the square lattice model, to t′ = t, the isotropic triangular lattice model. We discuss the polarization dependence of the Raman spectra, which could be used to identify the relevant superconducting pairing symmetry of frustrating systems such as layered organic superconductors.
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