“…Many works [5,6,7,8,9,10,11,12,13,14,15,16,17,18,19] have been devoted to understanding the relationship between QPT and the entanglement in different systems. It has been observed that quantum phase transitions are signaled by critical behaviors of concurrence [20], a measure of entanglement for two-qubit system, in a number of spin models [5,6,7,8,9]. For example, it was reported that the first derivative of the concurrence diverges at the transition point in the one-dimensional transverse field Ising model [5], while the concurrence shows cusplike behavior around the critical point in some 2D and 3D spin models [7].…”