Charge-transfer polaron induced negative differential resistance and   giant magnetoresistance in organic spintronics: A Su-Schrieffer-Heeger model   study
  Combining the Su-Schrieffer-Heeger model and the non-equilibrium Green's function formalism, we investigate the negative differential resistance effect in organic spintronics at low temperature and interprete it with a self-doping picture. A giant negative magnetoresistance exceeding 300% is theoretically predicted as the results of the negative differential resistance effects. 
J. H. Wei, S. J. Xie, L. M. Mei, J. Berakdar, and YiJing Yan