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题名: Low-energy effective theory for spin dynamics of fluctuating stripes
作者: Cheng, CH
刊名: PHYSICAL REVIEW B
出版日期: 2005
卷号: 72, 期号:18, 页码:-
关键词: T-J MODEL ;  MEAN-FIELD THEORY ;  PHASE-SEPARATION ;  MAGNETIC DYNAMICS ;  SUPERCONDUCTIVITY ;  ANTIFERROMAGNET ;  LA2CUO4 ;  HOLES
学科分类: Physics
通讯作者: Cheng, CH , Acad Sinica, Inst Phys, Taipei 115, Taiwan.
部门归属: Acad Sinica, Inst Phys, Taipei 115, Taiwan; Chinese Acad Sci, Inst Theoret Phys, Beijing, Peoples R China
英文摘要: We derive an effective Hamiltonian for spin dynamics of fluctuating smectic stripes from the t-J model in the weak coupling limit t > J. Besides the modulation of spin magnitude, the high energy hopping term would induce a low-energy antiferromagnetic interaction between two neighboring "blocks of spins." Based on the effective Hamiltonian, we applied the linear spin-wave theory and found that the spin-wave velocity is almost isotropic for La2-xSrxCuO4 unless the structural effect is considered. The intensity of the second harmonic mode is found to be about 10% to that of the fundamental mode.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000233603600080
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13730
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Cheng, CH. Low-energy effective theory for spin dynamics of fluctuating stripes[J]. PHYSICAL REVIEW B,2005,72(18):-.
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