Thermal Entanglement of XXZ Heisenberg Chain under Rectangle Magnetic Field |
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Authors: | Xin Yu Zhao Ling Zhou |
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Institution: | (1) Department of Physics, Dalian University of Technology, Dalian, 116024, China |
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Abstract: | We study thermal entanglement of XXZ Heisenberg chain under rectangle magnetic field. Under this magnetic field B, the region of thermal entanglement in terms of B and temperature T can be extended. Moreover, one can improve threshold temperature, where entanglement vanish, just by increasing the strength
of magnetic field. This effect is similar to that of the anisotropic coupling of spin in XY plane but provide us a realizable method to improve threshold temperature. |
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