Thermal entanglement in spin chain with XX, XY, and XZ Heisenberg interaction
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JITF-4-2_002
تاریخ نمایه سازی: 2 بهمن 1400
Abstract:
In this paper, the quantum correlation of the ۲- spin Heisenberg model systems with Dzyaloshinskii-Moriya interaction and in the presence of the external magnetic field is studied. Three types of the exchange interaction, XX, XY, and XZ interactions are considered . The thermal entanglement of these systems is investigated under the change of the external magnetic field. We found that the temperature behavior of three models is similar, although the critical temperature is different. Also, we investigated the effect of the external magnetic field on the negativity of the system. We observed that all three models have the critical magnetic field in which the negativity of the system becomes zero. In fact, the anisotropic Heisenberg interaction can affect the critical temperature and critical magnetic field of the two- spin systems.
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Authors
مریم محمودی
Department of Physics, University of Guilan, Rasht, Iran
محمدرضا سلطانی
Department of Physics, Yadegar-e-Imam Khomeini (RAH) Shahre Rey Branch, Islamic Azad University, Tehran, Iran
ارزو جهانشیر
Imam Khomeini International University, Buein Zahra Higher Education Centre of Engineering and Technology, Department of Physics and Engineering Sciences, Iran