The phase of polyelectrolyte complex, denoted by superscript pec , consists of N A = 32 polyanions and N C = 32 polycations of length M = 32 units each. This system is enclosed in a cubic simulation box of size L with periodic boundary conditions. Monomeric units of the polyelectrolyte chains are modelled as point particles characterized by effective size, σ mon , and fixed charge number, z mon . Unless stated otherwise, σ mon = 0.426 nm for both polycation and polyanion, and z = ±1 respectively. Each pair of monomeric units interacts through the non-bonded pairwise potential introduced by Weeks, Chandler and Andersen (WCA): 112,113