NONTRIVIAL FIXED-POINT STRUCTURE OF THE 2-DIMENSIONAL + -J 3-STATE POTTS FERROMAGNET SPIN-GLASS/

The fixed-point structure of the 2D 3-state random-bond Potts model wi th a bimodal (+/-J) distribution of couplings is fully determined usin g numerical renormalization group techniques. Along the paramagnet-to- ferromagnet critical line we find a total of four distinct fixed point s: i) the pure critical fixed point, ii) the critical fixed point for the random-bond, but unfrustrated, ferromagnet, iii) a bicritical fixe d point analogous to the bicritical Nishimori fixed point found in the random-bond frustrated Ising model, and iv) the zero-temperature spin -glass-to-ferromagnet critical fixed point. Estimates of the associate d critical exponents are given for the various fixed points.