Phase Diagram of a Holographic Superconductor Model with s-wave and   d-wave
  We consider a holographic model with a scalar field, a tensor field and a direct coupling between them as a superconductor with an s-wave and a d-wave. We find a rich phase structure in the model. The model exhibits a phase of coexistence of the s-wave and the d-wave, or a phase of an order competition. Furthermore, it has a triple point. 
Mitsuhiro Nishida
hep-th