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The role of spin-orbit interaction on the ground state and thermalentanglement of a Heisenberg XYZ two-qubit system in the presence of aninhomogeneous magnetic field is investigated. For a certain value of spin-orbitparameter $D$, the ground state entanglement tends to vanish suddenly and when$D$ crosses its critical value $D_c$, the entanglement undergoes a revival. Themaximum value of the entanglement occurs in the revival region. In finitetemperatures there are revival regions in $D-T$ plane. In these regions,entanglement first increases with increasing temperature and then decreases andultimately vanishes for temperatures above a critical value. This criticaltemperature is an increasing function of $D$, thus the nonzero entanglement canexist for larger temperatures. In addition, the amount of entanglement in therevival region depends on the spin-orbit parameter. Also, the entanglementteleportation via the quantum channel constructed by the above system isinvestigated and finally the influence of the spin-orbit interaction on thefidelity of teleportation and entanglement of replica state is studied.

The effect of spin-orbit interaction on entanglement of two-qubit Heisenberg XYZ systems in an inhomogeneous magnetic field