Low-Energy Spin Fluctuations in the Ground States of Electron-Doped Pr1−xLaCexCuO4+δ Cuprate Superconductors
M. Fujita, M. Matsuda, S.-H. Lee, M. Nakagawa, K. Yamada
DOI 10.1103/PhysRevLett.101.107003 · Physical Review Letters
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Abstract
Low-energy spin fluctuations have been investigated in the electron-doped Pr1−xLaCexCuO4+δ over a wide concentration range of 0.07⩽x⩽0.18, spanning from the antiferromagnetic phase to the heavily overdoped superconducting (SC) phase. The low-energy excitations exhibit commensurate peaks centered at the (π, π) position for all x. Our data show that the characteristics of the excitations, such as the relaxation rate and the spin stiffness, decrease with increasing x in the SC phase and disappear with the disappearance of superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pr1-xLaCexCuO4+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | onset |
| Pr0.88LaCe0.12CuO4+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nd2-xCexCuO4+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La2-xSrxCuO4 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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