Analogy between Three-Dimensional Helimagnetic Metals and   Two-Dimensional Nonmagnetic Metals: Transport in the Weak-Disorder Regime
  We present a quasi-particle model that allows for a simple description of the electronic properties of metallic helimagnets. For weak quenched disorder, we find a leading linear temperature dependence of the electrical conductivity for 3-d materials. This is reminiscent of the behavior of nonmagnetic 2-d systems, and reflects a general tendency of certain properties of bulk helimagnets to appear effectively 2-d. The sign of the effect is opposite to that in nonmagnetic 2-d materials. These surprising predictions should be observable in weak helimagnets. 
T.R. Kirkpatrick, D. Belitz, and Ronojoy Saha