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

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

2008-07-09

arxiv.org/abs/0807.1457v2

Int. J. Quantum Inf. 7, 547 (2009)

Physics

Quantum Physics

5 pages, 6 figures

Scientific paper

10.1016/j.optcom.2008.11.087

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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