Pairing interaction near a nematic QCP of a 3-band CuO$_2$ model
  Here we calculate the strength of the $d$-wave pairing and the $k$ dependence of the gap function associated with the nematic fluctuations of a CuO$_2$ model as the doping $p$ approaches a quantum critical point. Higher order $d$-wave harmonics contribute to the $k$ dependence of the resulting superconducting gap function reflecting the longer range nature of the nematic pairing interaction. 
T.A. Maier, D.J. Scalapino
cond-mat.supr-con