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). |
(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. |