Temperature scaling of the integrated dynamical susceptibility in YBa2Cu3O6.5(T c =50 K)

Birgeneau, R. J.; Erwin, R. W.; Gehring, P. M.; Kastner, M. A.; Keimer, B.; Sato, M.; Shamoto, S.; Shirane, G.; Tranquada, J. M.

doi:10.1007/bf01308252

Cited by 48 publications

(28 citation statements)

References 17 publications

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“…In early studies of the temperature dependence, χ ′′ in disordered YBCO 6.5 was found to follow a simple ω/T scaling relation. 38 The same ω/T scaling was very successful in describing the temperature dependence of the integrated susceptibility in underdoped La 2−x Sr x CuO 4 .…”

Section: B Incommensurate Dynamic Structure Inmentioning

confidence: 92%

Dynamic stripes and resonance in the superconducting and normal phases ofYBa2Cu3O
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et al. 2004
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We describe the relation between spin fluctuations and superconductivity in a highly-ordered sample of YBa2Cu3O6.5 using both polarized and unpolarized neutron inelastic scattering. The spin susceptibility in the superconducting phase exhibits one-dimensional incommensurate modulations at low-energies, consistent with hydrodynamic stripes. With increasing energy the susceptibility curves upward to a commensurate, intense, well-defined and asymmetric resonance at 33 meV with a precipitous high-energy cutoff. In the normal phase, which we show is gapless, the resonance remains surprisingly strong and persists clearly in Q scans and energy scans. Its similar asymmetric spectral form above Tc=59 K suggests that incoherent superconducting pairing fluctuations are present in the normal state. On cooling, the resonance and the stripe modulations grow in well above Tc below a temperature that is comparable to the pseudogap temperature where suppression occurs in local and low-momentum properties. The spectral weight that accrues to the resonance is largely acquired by transfer from suppressed low-energy fluctuations. We find the resonance to be isotropically polarized, consistent with a triplet carrying ∼ 2.6 % of the total spectral weight of the Cu spins in the planes.

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Section: B Incommensurate Dynamic Structure Inmentioning

confidence: 92%

Dynamic stripes and resonance in the superconducting and normal phases ofYBa2Cu3O
Stock
¹
,
Buyers
²
,
Liang
³

et al. 2004
Phys. Rev. B
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“…32 It is interesting to note that scaling is followed in both the YBCO 6+x and LSCO cuprates over a very broad range of hole dopings implying that the origin of scaling is not simply the close proximity of a quantum critical point.…”

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confidence: 99%

Magnetic Neutron Scattering in Hole-Doped Cuprate Superconductors

et al. 2006

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A review is presented of the static and dynamic magnetic properties of hole-doped cuprate superconductors measured with neutron scattering. A wide variety of experiments are described with emphasis on the monolayer La2−x(Sr,Ba)xCuO4 and bilayer YBa2Cu3O6+x cuprates. At zero hole doping, both classes of materials are antiferromagnetic insulators with large superexchange constants of J > 100 meV. For increasing hole doping, the cuprates become superconducting at a critical hole concentration of xc=0.055. The development of new instrumentation at neutron beam sources coupled with the improvement in materials has lead to a better understanding of these materials and the underlying spin dynamics over a broad range of hole dopings. We will describe how the spin dispersion changes across the insulating to superconducting boundary as well as the static magnetic properties which are directly coupled with the superconductivity. Experiments directly probing the competing magnetic and superconducting order parameters involving magnetic fields, impurity doping, and structural order will be examined. Correlations between superconductivity and magnetism will also be discussed.

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“…It is also noted that the broadening Γ is important from the view point that it suppresses the tendency of the antiferromagnetic ordering: From the calculation, the nonzero ∆0 can be found to suppress the ordering, and it can be also found that, even when ∆0~0, the large broadening Γ suppresses the antiferromagnetic ordering. Now, we make brief comments on the differences between the present experimental data and those reported in the former papers 13,14) for the crystal IMS No.29, whose oxygen number was estimated to be ~6.5. In IMS No.29, gap-like structure (pseudo gap) was not observed in χ"(q q q q,ω).…”

Section: Experimental and Calculated Resultsmentioning

confidence: 74%

“…However, being judged from the observed χ"(q q q q,ω), the present crystal has larger hole-carrier concentration than that of the crystal labeled IMS No.29(Tc ≅50 K), for which the oxygen number y was also estimated to be ~6.5 and experimental data of χ"(q q q q,ω) were reported in the former papers. 13,14) The slightly higher …”

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confidence: 99%

Detailed Structure of the Magnetic Excitation Spectra of YBa₂Cu₃O_y and Its Implication on the Physical Characteristics of the Electron System

et al. 2002

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Abstract AbstractDetailed structure of the magnetic excitation spectra χ"(q q q q,ω) of the superconducting oxide YBa2Cu3O6.5(the transition temperature Tc ≅ 52 K) in the wave vector (q q q q)-and the energy(ω)-space, and its temperature (T) dependence have been studied. By adopting an effective energy dispersion of the quasi particles which can reproduce the shape of the Fermi surface and by introducing the exchange interaction between the Cu spins, a rather satisfactory agreement between the calculation and the experimentally observed data can be obtained. In the study, it has been found that the effects of the quasi particleenergy broadening on the excitation spectra χ"(q q q q,ω) is important. The sharp resonance peak observed at ω ~ 40 meV for the optimally doped system of YBa2Cu3Oy can be naturally reproduced by the present model.

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Temperature scaling of the integrated dynamical susceptibility in YBa2Cu3O6.5(T c =50 K)

Cited by 48 publications

References 17 publications

Dynamic stripes and resonance in the superconducting and normal phases ofYBa2Cu3O
Stock
¹
,
Buyers
²
,
Liang
³

et al. 2004
Phys. Rev. B
Self Cite
174
24
216
2
View full text Add to dashboard Cite

Dynamic stripes and resonance in the superconducting and normal phases ofYBa2Cu3O
Stock
¹
,
Buyers
²
,
Liang
³

et al. 2004
Phys. Rev. B
Self Cite
174
24
216
2
View full text Add to dashboard Cite

Magnetic Neutron Scattering in Hole-Doped Cuprate Superconductors

Detailed Structure of the Magnetic Excitation Spectra of YBa₂Cu₃O_y and Its Implication on the Physical Characteristics of the Electron System

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Temperature scaling of the integrated dynamical susceptibility in YBa2Cu3O6.5(T c =50 K)

Cited by 48 publications

References 17 publications

Dynamic stripes and resonance in the superconducting and normal phases ofYBa2Cu3OStock1, Buyers2, Liang3 et al. 2004Phys. Rev. BSelf Cite174242162View full textAdd to dashboardCite

Dynamic stripes and resonance in the superconducting and normal phases ofYBa2Cu3OStock1, Buyers2, Liang3 et al. 2004Phys. Rev. BSelf Cite174242162View full textAdd to dashboardCite

Magnetic Neutron Scattering in Hole-Doped Cuprate Superconductors

Detailed Structure of the Magnetic Excitation Spectra of YBa2Cu3Oy and Its Implication on the Physical Characteristics of the Electron System

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Product

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About

Dynamic stripes and resonance in the superconducting and normal phases ofYBa2Cu3O
Stock
¹
,
Buyers
²
,
Liang
³

et al. 2004
Phys. Rev. B
Self Cite
174
24
216
2
View full text Add to dashboard Cite

Dynamic stripes and resonance in the superconducting and normal phases ofYBa2Cu3O
Stock
¹
,
Buyers
²
,
Liang
³

et al. 2004
Phys. Rev. B
Self Cite
174
24
216
2
View full text Add to dashboard Cite

Detailed Structure of the Magnetic Excitation Spectra of YBa₂Cu₃O_y and Its Implication on the Physical Characteristics of the Electron System