Phonon Raman scattering in superconducting La1.85Sr0.15CuO4−y
S. Blumenroeder, E. Zirngiebl, J. D. Thompson, P. Killough, J. L. Smith, Z. Fisk
DOI 10.1103/PhysRevB.35.8840 · Physical Review B
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Abstract
We have performed Raman scattering experiments on the high-Tc superconductor La1.85Sr0.15CuO4−y (Tc≃37 K). We observe three of the four Raman-active optical phonon modes and, on the basis of a comparison to the Raman spectra of K2MnF4, are able to tentatively assign the mode symmetries. No anomalous temperature dependence is observed for all three modes, indicative of the lack of strong electron-phonon coupling in these modes.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.85Sr0.15CuO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | Pressure not reported | onset |
| La2CuO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nb3Ge Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23 | Pressure not reported | unknown |
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