Thermal entanglement of the Ising–Heisenberg diamond chain with Dzyaloshinskii–Moriya interaction*
Qiao Jie, Zhou Bin
       
The concurrence C versus the temperature T for different values of D x with h = 0, J 0 = 1, and (a) J = 0.5; (b) J = 1; (c) J = 1.1.