High-Energy Spin Excitations in the Electron-Doped Superconductor Pr0.88LaCe0.12CuO4−δ with Tc=21 K
Stephen D. Wilson, Shiliang Li, Hyungje Woo, Pengcheng Dai, H. A. Mook, C. D. Frost, Seiki Komiya, Yoichi Ando
DOI 10.1103/PhysRevLett.96.157001 · Physical Review Letters
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Abstract
We use high-resolution inelastic neutron scattering to study the low-temperature magnetic excitations of the electron-doping superconductor Pr0.88LaCe0.12CuO4−δ (Tc=21±1 K) over a wide energy range (4 meV≤ℏω≤330 meV). The effect of electron doping is to cause a wave vector (Q) broadening in the low-energy (ℏω≤80 meV) commensurate spin fluctuations at (0.5, 0.5) and to suppress the intensity of spin-wave-like excitations at high energies (ℏω≥100 meV). This leads to a substantial redistribution in the spectrum of the local dynamical spin susceptibility χ′′(ω), and reveals a new energy scale similar to that of the lightly hole-doped YB2Cu3O6.353 (Tc=18 K).
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pr0.88LaCe0.12CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21 | Pressure not reported | unknown |
| Pr0.88LaCe0.12CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21 | Pressure not reported | unknown |
| YBa2Cu3O6.353 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 18 | Pressure not reported | unknown |
| Nd1.85Ce0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La2-x(Sr,Br)xCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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