Enhanced electrical resistivity before Néel order in the metals, RCuAs${}_2$ (R= Sm, Gd, Tb and Dy

E. V. Sampathkumaran, Kausik Sengupta, S. Rayaprol +3

We report an unusual temperature (T) dependent electrical resistivity($\rho$) behavior in a class of ternary intermetallic compounds of the type RCuAs${}_2$ (R= Rare-earths). For some r…