Thermal entanglement of the Ising–Heisenberg diamond chain with Dzyaloshinskii–Moriya interaction*
Qiao Jie, Zhou Bin
       
The dependence of the critical magnetic field h c on D z for different values of J with J 0 = 1 and T = 0.1.(Here, it is assumed that C with the value less than 10−3 corresponds to the entanglement disappearing.)