Asymmetric field dependence of specific heat in two-leg Heisenberg antiferromagnetic spin ladders with asymmetric leg interactions

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	Asymmetric field dependence of specific heat in two-leg Heisenberg antiferromagnetic spin ladders with asymmetric leg interactions
	R. X. Li; S. L. Wang; Y. Ni; K. L. Yao; H. H. Fu
	2014
发表期刊	Solid State Communications
ISSN	0038-1098
卷号	186 页码:42-45
摘要	Two leg Heisenberg antiferromagnetic spin 1/2 ladders with asymmetric leg interactions (J(1)not equal J(2)) are studied using the bond-mean held method. With different J(1)-J(2)-J(perpendicular to) couplings, magnetization process exhibits distinct properties. For J(1):J(2):J(perpendicular to)=4:2:1 and 4:1:2, M-h curves exhibit cusp-type singularities which do not appear for J(1):J(2):J(perpendicular to)=2:1:4. Field dependence of specific heat (C-v/T-h curve) has been found to be asymmetric about h(m)=(h(1) + h(2))/2, h(1) and h(2) are two critical fields. The cusp in M-h curves and the asymmetric structure of C-v/T-h curves are closely related to their energy spectrums. The linearity of specific heat in the gapless Luttinger-liquid phase and the underlying asymmetric ladder structure can be characterized by C-v/T-h curves. (C) 2014 Elsevier Ltd. All rights reserved.
部门归属	[li, rui-xue ; wang, shu-ling ; ni, yun ; yao, kai-lun ; fu, hua-hua] huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china. [li, rui-xue ; wang, shu-ling ; ni, yun ; 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
关键词	Asymmetric Spin Ladder Magnetization Curve Specific Heat Magnetization Plateaus Entanglement Behavior Gap
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72871
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. X. Li,S. L. Wang,Y. Ni,et al. Asymmetric field dependence of specific heat in two-leg Heisenberg antiferromagnetic spin ladders with asymmetric leg interactions[J]. Solid State Communications,2014,186:42-45.
APA	R. X. Li,S. L. Wang,Y. Ni,K. L. Yao,&H. H. Fu.(2014).Asymmetric field dependence of specific heat in two-leg Heisenberg antiferromagnetic spin ladders with asymmetric leg interactions.Solid State Communications,186,42-45.
MLA	R. X. Li,et al."Asymmetric field dependence of specific heat in two-leg Heisenberg antiferromagnetic spin ladders with asymmetric leg interactions".Solid State Communications 186(2014):42-45.