Localization length as a function of incident angle for and two random strengths in pseudospin-1 and -1/2 systems subjected to 1D disordered potentials. The two random strengths are chosen from the respective decreasing and increasing regions in Figures 5(a) and 5(c) for pseudospin-1 and -1/2 systems. For pseudospin-1 systems, in the case of (), the localization length at small (blue solid circles) is fitted by a dotted line, showing a behavior. For all other three cases, the localization length at small is well fitted by . Adapted from .