Neutron-Spin Resonance in the Optimally Electron-Doped Superconductor Nd1.85Ce0.15CuO4−δ
Jun Zhao, Pengcheng Dai, Shiliang Li, Paul G. Freeman, Y. Onose, Y. Tokura
DOI 10.1103/PhysRevLett.99.017001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We use inelastic neutron scattering to probe magnetic excitations of an optimally electron-doped superconductor Nd1.85Ce0.15CuO4−δ above and below its superconducting transition temperature Tc=25 K. In addition to gradually opening a spin pseudogap at the antiferromagnetic ordering wave vector Q=(1/2,1/2,0), the effect of superconductivity is to form a resonance centered also at Q=(1/2,1/2,0) but at energies above the spin pseudogap. The intensity of the resonance develops like a superconducting order parameter, similar to those for hole-doped superconductors and electron-doped Pr0.88LaCe0.12CuO4. The resonance is therefore a general phenomenon of cuprate superconductors, and must be fundamental to the mechanism of high-Tc superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd1.85Ce0.15CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 25 | Pressure not reported | onset |
| Nd1.85Ce0.15CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 25 | Pressure not reported | onset |
| Pr0.88LaCe0.12CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure not reported | unknown |
Similar papers
Momentum Dependence of Charge Excitations in the Electron-Doped Superconductor Nd1.85Ce0.15CuO4: A Resonant Inelastic X-Ray Scattering Study
similarity 0.97K. Ishii et al.
Source status unknown — claims are unverified
Effect of a magnetic field on the long-range magnetic order in insulating Nd2CuO4 and nonsuperconducting and superconducting Nd1.85Ce0.15CuO4
similarity 0.97M. Matsuura et al.
Source status unknown — claims are unverified
Tunneling spectroscopy of superconducting Nd1.85Ce0.15CuO4−δ
similarity 0.96S. Kashiwaya et al.
Source status unknown — claims are unverified
Gap anisotropy, spin fluctuations, and normal-state properties of the electron-doped superconductor Sr0.9La0.1CuO2
similarity 0.96G. V. M. Williams et al.
Source status unknown — claims are unverified
Absence of a magnetic-field effect on static magnetic order in the electron-doped superconductor Nd1.86Ce0.14CuO4
similarity 0.95M. Matsuda et al.
Source status unknown — claims are unverified
Magnetic Field Effect on the Superconducting Magnetic Gap of Nd1.85Ce0.15CuO4
similarity 0.95E. M. Motoyama et al.
Source status unknown — claims are unverified