Entanglement in a two-spin (1/2,3/2) mixed-spin Heisenberg XX chain with an inhomogeneous external magnetic field |
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Authors: | GUO KeTao LIANG MingChao XU HongYu & ZHU ChengBo School of Applied Science Jiangxi University of Science Technology Ganzhou China |
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Affiliation: | GUO KeTao,LIANG MingChao,XU HongYu & ZHU ChengBo School of Applied Science,Jiangxi University of Science and Technology,Ganzhou 341000,China |
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Abstract: | By using the concept of negativity, we investigate the thermal entanglement of a two-spin (1/2, 3/2) mixed-spin Heisenberg XX chain with an inhomogeneous external magnetic field. We obtain the analytical results of entanglement of this model. For the case of uniform magnetic field, we find that the critical temperature is higher than the results of the spin-1/2 chain and (1/2,1) mixed-spin chain. And by adjusting the nonuniform parameter b, one is able to obtain more entanglement at a higher temperature. |
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Keywords: | entanglement mixed-spin negativity quantum transition |
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