Thermal Entanglement in the Spin-<em>S</em> Heisenberg <em>XYZ</em> Model

doi:10.1088/0256-307X/31/4/040301

Chin. Phys. Lett.

2014, Vol. 31

Issue (04): 040301 DOI: 10.1088/0256-307X/31/4/040301

GENERAL

Thermal Entanglement in the Spin-S Heisenberg XYZ Model

LI Hu¹, LI Da-Chuang^1,2,3**, WANG Xian-Ping^4**, YANG Ming¹, CAO Zhuo-Liang^1,2

¹School of Physics Material Science, Anhui University, Hefei 230039
²School of Electronic and Information Engineering, Hefei Normal University, Hefei 230601
³Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026
⁴Department of Physics, Fuyang Teachers College, Fuyang 236041

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LI Hu, LI Da-Chuang, WANG Xian-Ping et al 2014 Chin. Phys. Lett. 31 040301

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Abstract The thermal entanglement in the spin-S Heisenberg XYZ model is studied in detail by using the entanglement measure of negativity. The effects of spin on the thermal entanglement, the threshold temperature, the critical uniform external magnetic field, the nonuniform external magnetic field and the entanglement extremum are discussed, respectively. It is shown that with increasing spin, the entanglement will increase, and then decrease slowly. In addition, we find that entanglement will approach a constant N_c with the increase of DM interaction, the constant increases with the increase of spin, and both the threshold temperature T_c and critical uniform external magnetic field B_c will increase with the increasing spin. Thus high-spin system can inhibit the influence of the external environment better.

Received: 17 December 2013 Published: 25 March 2014

PACS:	03.67.Mn	(Entanglement measures, witnesses, and other characterizations)
	03.65.Ud	(Entanglement and quantum nonlocality)
	75.10.Jm	(Quantized spin models, including quantum spin frustration)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/31/4/040301 OR https://cpl.iphy.ac.cn/Y2014/V31/I04/040301

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	LI Hu
	LI Da-Chuang
	WANG Xian-Ping
	YANG Ming
	CAO Zhuo-Liang

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