Thermal quantum correlations of a spin-1/2 Ising–Heisenberg diamond chain with Dzyaloshinskii–Moriya interaction*

Project supported by the National Natural Science Foundation of China (Grant No. 11274102), the New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-11-0960), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20134208110001).

Zheng Yidan, Mao Zhu, Zhou Bin
       

(color online) TQD versus the anisotropy parameter Δ for different temperatures T with fixed values of the coupling parameters J = J1 = 1, the external magnetic field h = 1, and DM interaction (a) Dz = 0.5, (c) Dz = 1, and (e) Dz = 1.5. (b), (d), and (f) indicate the first derivatives of (a), (c), and (e) with respect to Δ.