Abstract
The thermal entanglement in (1/2,1) mixed-spin Heisenberg XXZ model is investigated under an external nonuniform magnetic field. In the uniform magnetic field system, the critical magnetic field B c and critical temperature T c are increased by increasing the anisotropic parameter k. The degree of magnetic field b plays an important role in improving the critical temperature and enlarging the region of entanglement in the nonuniform magnetic field system.
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Supported by the National Natural Science Foundation of China (Grant No. 60607013)
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Wang, F., Jia, H., Zhang, H. et al. Thermal entanglement in a mixed-spin Heisenberg XXZ model under a nonuniform external magnetic field. Sci. China Ser. G-Phys. Mech. Astron. 52, 1919–1924 (2009). https://doi.org/10.1007/s11433-009-0222-y
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DOI: https://doi.org/10.1007/s11433-009-0222-y