arXiv 0807.14572008-07quant-ph

Effect of different Dzyaloshinskii-Moriya interactions on entanglement in the Heisenberg XYZ chain

Da-Chuang Li, Zhuo-Liang Cao

备注：: 5 pages, 6 figures
发表信息：: Int. J. Quantum Inf. 7, 547 (2009)
DOI：: 10.1016/j.optcom.2008.11.087

英文摘要：

In this paper, we study the thermal entanglement in a two-qubit Heisenberg XYZ system with different Dzyaloshinskii-Moriya (DM) couplings. We show that different DM coupling parameters have different influences on the entanglement and the critical temperature. In addition, we find that when $J_{i}$ ($i$-component spin coupling interaction) is the largest spin coupling coefficient, $D_{i}$ ($i$-component DM interaction) is the most efficient DM control parameter, which can be obtained by adjusting the direction of DM interaction.

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