Thermal entanglement in a mixed-spin Heisenberg XXZ model under a nonuniform external magnetic field |
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| Authors: | Fei Wang HongHui Jia HaiLiang Zhang XueAo Zhang ShengLi Chang |
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| Affiliation: | (1) Department of Physics, Dalian University of Technology, Dalian, 116024, China |
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| 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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