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Ground-state properties and quantum entanglement in rung-dimerized spin-1/2 antiferromagnetic ladder
R. X. Li; S. L. Wang; K. L. Yao; H. H. Fu
2013
Source PublicationPhysics Letters A
ISSN0375-9601
Volume377Issue:37Pages:2422-2427
AbstractThe ground-state properties and quantum entanglement of the two-leg rung-dimerized spin-1/2 Heisenberg antiferromagnetic ladders are investigated based on the Green' function combined with the Bond mean-field theory. Numerical results show that the ground-state energies do not change with the rung dimerization, and the ground-state gaps are almost proportionate to the rung dimerization coefficient delta and coupling strength alpha. Magnetization curves and entanglement measurements demonstrate that there are five magnetic phases, which are identified in the h-delta phase diagram. Entanglement measurements in different phases exhibit distinct behaviors, implying the fundamental differences of the five magnetic phases. (c) 2013 Elsevier B.V. All rights reserved.
description.department[li, rui-xue ; wang, shu-ling ; yao, kai-lun ; fu, hua-hua] huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china. [li, rui-xue ; wang, shu-ling ; yao, kai-lun ; fu, hua-hua] huazhong univ sci & technol, wuhan natl high magnet field ctr, wuhan 430074, peoples r china. [yao, kai-lun] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. ; yao, kl (reprint author), huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china. ; li19851025@126.com ; klyao@mail.hust.edu.cn
KeywordSpin Ladder Quantum Phase Transition Quantum Entanglement Concurrence Magnetization Plateaus Heisenberg-model Phase-transition Exchange Gap
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71326
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
R. X. Li,S. L. Wang,K. L. Yao,et al. Ground-state properties and quantum entanglement in rung-dimerized spin-1/2 antiferromagnetic ladder[J]. Physics Letters A,2013,377(37):2422-2427.
APA R. X. Li,S. L. Wang,K. L. Yao,&H. H. Fu.(2013).Ground-state properties and quantum entanglement in rung-dimerized spin-1/2 antiferromagnetic ladder.Physics Letters A,377(37),2422-2427.
MLA R. X. Li,et al."Ground-state properties and quantum entanglement in rung-dimerized spin-1/2 antiferromagnetic ladder".Physics Letters A 377.37(2013):2422-2427.
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