| 具有Dzyaloshinskii-Moriya相互作用的XX模型中的热纠缠 |
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| 引用本文： | 张英丽,周斌.具有Dzyaloshinskii-Moriya相互作用的XX模型中的热纠缠[J].湖北大学学报(自然科学版),2011,33(3):373-377. |
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| 作者姓名： | 张英丽 周斌 |
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| 作者单位： | 湖北大学物理学与电子技术学院,湖北武汉,430062 |
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| 基金项目： | 国家自然科学基金(10974046); 湖北省自然科学基金(2009CDB360); 湖北省教育厅重点项目(D20101004)资助 |
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| 摘 要： | 研究两量子比特海森堡XX模型中热纠缠的性质.考虑自旋之间沿X和Y方向的Dzyaloshinskii-Moriya (DM)相互作用,计算出两量子比特之间的共生纠缠度.研究结果表明:对于铁磁和反铁磁这两种情形,沿X和y方向的DM相互作用对热纠缠和临界温度的影响是不同的.因此选择和调整合适的X和Y方向的DM相互作用参数,可...
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| 关 键 词： | 热纠缠 XX模型 Dzyaloshinskii-Moriya (DM)相互作用 |
Thermal entanglement with the Dzyaloshinskii-Moriya interaction in the Heisenberg XX model |
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| ZHANG Yingli,ZHOU Bin.Thermal entanglement with the Dzyaloshinskii-Moriya interaction in the Heisenberg XX model[J].Journal of Hubei University(Natural Science Edition),2011,33(3):373-377. |
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| Authors: | ZHANG Yingli ZHOU Bin |
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| Institution: | ZHANG Yingli,ZHOU Bin (School of Physics and Electronic Technology,Hubei University,Wuhan 430062,China) |
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| Abstract: | We studied the properties of thermal entanglement in one-dimention two-qubit Heisenberg model,where Dzyaloshinskii-Moriya(DM) interaction between spin with x-component and y-component was considered and concurrence was calculated to research this entanglement property.The results showed that on the case of ferromagnetic and antiferromagnetic,interaction had different effects on the entanglement and critical temperature.Therefore,the entanglement could be controlled and enhanced by choosing appropriate inter... |
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| Keywords: | thermal entanglement XX model Dzyaloshinskii-Moriya(DM) interaction |
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