Elementary excitations in the spin-tube and spin-orbit models

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	Elementary excitations in the spin-tube and spin-orbit models
	Wang, HT
刊名	PHYSICAL REVIEW B
	2001
卷号	64 期号:17
关键词	ANTIFERROMAGNETIC HEISENBERG LADDER GROUND-STATE PROPERTIES PHASE-DIAGRAM COMPOSITE SPIN FIELD-THEORY CHAIN SYSTEMS KAGOME MAGNETIZATION DEGENERACY
ISSN号	0163-1829
通讯作者	Wang, HT: Max Planck Inst Phys Complexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany.
中文摘要	A bond operator representation for three S=1/2 spins is obtained along the same line as the two-spin cases. With the spin and the chirality freedom expressed by the same bond operators, we studied the elementary excitations of the spin-tube and the spin-orbit models. For 3-leg spin ladders and general spin ladders with an odd number of legs and periodic boundary conditions in the rung direction, the spinonlike excitations, which carry 1/2 spin and chirality freedoms, are calculated by a variational ansatz. The magnonlike excitations, which denote the change of a dimerized bond from spin singlet to spin triplet and/or from chirality triplet to chirality singlet, or from one kind of chirality triplet to another chirality triplet, with different z-component, are also studied. Bound states of spinonlike excitation pairs exist near the vicinity of momentum zone center pi /2. The bond operators are also applied to other general spin-orbit models with spontaneously dimerized ground states, and the elementary excitations are studied.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/37274]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wang, HT. Elementary excitations in the spin-tube and spin-orbit models[J]. PHYSICAL REVIEW B,2001,64(17).
APA	Wang, HT.(2001).Elementary excitations in the spin-tube and spin-orbit models.PHYSICAL REVIEW B,64(17).
MLA	Wang, HT."Elementary excitations in the spin-tube and spin-orbit models".PHYSICAL REVIEW B 64.17(2001).