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Cheng, CH; Cheng, CH , Acad Sinica, Inst Phys, Taipei 115, Taiwan.
Low-energy effective theory for spin dynamics of fluctuating stripes
Source PublicationPHYSICAL REVIEW B
KeywordT-j Model Mean-field Theory Phase-separation Magnetic Dynamics Superconductivity Antiferromagnet La2cuo4 Holes
AbstractWe 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.
2005
ISSN1098-0121
Volume72Issue:18Pages:-
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13730
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCheng, CH , Acad Sinica, Inst Phys, Taipei 115, Taiwan.
Recommended Citation
GB/T 7714
Cheng, CH,Cheng, CH , Acad Sinica, Inst Phys, Taipei 115, Taiwan.. Low-energy effective theory for spin dynamics of fluctuating stripes[J]. PHYSICAL REVIEW B,2005,72(18):-.
APA Cheng, CH,&Cheng, CH , Acad Sinica, Inst Phys, Taipei 115, Taiwan..(2005).Low-energy effective theory for spin dynamics of fluctuating stripes.PHYSICAL REVIEW B,72(18),-.
MLA Cheng, CH,et al."Low-energy effective theory for spin dynamics of fluctuating stripes".PHYSICAL REVIEW B 72.18(2005):-.
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