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Feng, S; Yuan, F; Su, ZB; Yu, L; Feng, S , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
Convergence of energy-dependent incommensurate antiferromagnetic neutron scattering peaks to commensurate resonance in underdoped bilayer cuprates
Source PublicationPHYSICAL REVIEW B
KeywordHigh-temperature Superconductors T-c Superconductors Spin Excitation Magnetic Excitations Electronic-structure j Model yba2cu3o6+x Fluctuations Dynamics bi2sr2cacu2o8+delta
AbstractThe 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.
2002
ISSN1098-0121
Volume66Issue:6Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13472
CollectionSCI期刊论文
Corresponding AuthorFeng, S , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
Recommended Citation
GB/T 7714
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):-.
APA Feng, S,Yuan, F,Su, ZB,Yu, L,&Feng, S , Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China..(2002).Convergence of energy-dependent incommensurate antiferromagnetic neutron scattering peaks to commensurate resonance in underdoped bilayer cuprates.PHYSICAL REVIEW B,66(6),-.
MLA Feng, S,et al."Convergence of energy-dependent incommensurate antiferromagnetic neutron scattering peaks to commensurate resonance in underdoped bilayer cuprates".PHYSICAL REVIEW B 66.6(2002):-.
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