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题名: Convergence of energy-dependent incommensurate antiferromagnetic neutron scattering peaks to commensurate resonance in underdoped bilayer cuprates
作者: Feng, S ;  Yuan, F ;  Su, ZB ;  Yu, L
刊名: PHYSICAL REVIEW B
出版日期: 2002
卷号: 66, 期号:6, 页码:-
关键词: HIGH-TEMPERATURE SUPERCONDUCTORS ;  T-C SUPERCONDUCTORS ;  SPIN EXCITATION ;  MAGNETIC EXCITATIONS ;  ELECTRONIC-STRUCTURE ;  J MODEL ;  YBA2CU3O6+X ;  FLUCTUATIONS ;  DYNAMICS ;  BI2SR2CACU2O8+DELTA
学科分类: Physics
通讯作者: Feng, S , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
部门归属: Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China; Acad Sinica, Natl Lab Superconduct, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Abdus Salam Int Ctr Theoret Phys, I-34014 Trieste, Italy
英文摘要: The recently discovered coexistence of incommensurate antiferromagnetic neutron scattering peaks and commensurate resonance in underdoped YBa2Cu3O6+x is calling for an explanation. Within the t-J model, the doping and energy dependence of the spin dynamics of the underdoped bilayer cuprates in the normal state is studied based on the fermion-spin theory by considering the bilayer interactions. Incommensurate peaks are found at [(1+/-delta)pi,pi] and [pi,(1+/-delta)pi] at low energies, with delta initially increasing with doping at low dopings and then saturating at higher dopings. These incommensurate peaks are suppressed, and the parameter delta is reduced with increasing energy. Eventually it converges to the [pi,pi] resonance peak. Thus the recently observed coexistence is interpreted in terms of bilayer interactions.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000177911700092
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13472
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:
Feng, S,Yuan, F,Su, ZB,et al. Convergence of energy-dependent incommensurate antiferromagnetic neutron scattering peaks to commensurate resonance in underdoped bilayer cuprates[J]. PHYSICAL REVIEW B,2002,66(6):-.
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