Antiferromagnetic Heisenberg ladders in staggered magnetic field

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	Antiferromagnetic Heisenberg ladders in staggered magnetic field
	Zhao, J , Renmin Univ, Dept Phys, Beijing 100872, Peoples R China; Zhao, J; Wang, XQ; Xiang, T; Su, ZB; Yu, L; Lou, JZ; Chen, CF
刊名	PHYSICAL REVIEW B
	2006
卷号	73 期号:1 页码:-
关键词	Dimensional S=1/2 Antiferromagnet Quantum Renormalization-groups Haldane-gap Edge States Spin Chain Yb4as3 Model
ISSN号	1098-0121
英文摘要	We study the low-energy excitations of the spin-1/2 antiferromagnetic Heisenberg chain and N-leg (N = 2,3,4) ladders in a staggered magnetic field h(s). We show that hs induces gap and midgap states in all the cases and we will examine their field scaling behavior. A modified boundary scheme is devised to extract accurate bulk excitation behavior. The gap values converge rapidly as N increases, leading to a field scaling exponent gamma=1/2 for both the longitudinal and transverse gaps of the square lattice (N ->infinity). The midgap states induced by the boundary edge effects share the bulk gap scaling exponents but their overall scaling behavior in the large-N limit needs further investigation.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000235009000019
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/6062]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Zhao, J , Renmin Univ, Dept Phys, Beijing 100872, Peoples R China
推荐引用方式 GB/T 7714	Zhao, J , Renmin Univ, Dept Phys, Beijing 100872, Peoples R China,Zhao, J,Wang, XQ,et al. Antiferromagnetic Heisenberg ladders in staggered magnetic field[J]. PHYSICAL REVIEW B,2006,73(1):-.
APA	Zhao, J , Renmin Univ, Dept Phys, Beijing 100872, Peoples R China.,Zhao, J.,Wang, XQ.,Xiang, T.,Su, ZB.,...&Chen, CF.(2006).Antiferromagnetic Heisenberg ladders in staggered magnetic field.PHYSICAL REVIEW B,73(1),-.
MLA	Zhao, J , Renmin Univ, Dept Phys, Beijing 100872, Peoples R China,et al."Antiferromagnetic Heisenberg ladders in staggered magnetic field".PHYSICAL REVIEW B 73.1(2006):-.