Thermal entanglement of the Ising–Heisenberg diamond chain with Dzyaloshinskii–Moriya interaction*
Qiao Jie, Zhou Bin
       
The concurrence C versus the magnetic field h for different values of D z with T = 0.1, J 0 = 1, and (a) J = 0.5; (b) J = 1; (c) J = 1.1.