Raman-Active c-Axis Plasma Modes in Multilayer High-Tc Cuprate Superconductors
D. Munzar, M. Cardona
DOI 10.1103/PhysRevLett.90.077001 · Physical Review Letters
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Abstract
The spectacular changes of the A1g-polarized Raman spectra of trilayer and four-layer high-Tc cuprate superconductors below Tc observed in recent experiments can be explained in terms of a new type of excitation that occurs in these systems, a Raman active c-axis plasmon. Its frequency, intensity, resonance properties, polarization properties, and coupling to phonon modes involving vibrations of the planar oxygens are estimated and shown to agree with those of the observed A1g superconductivity-induced electronic peak.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| HgBa2Ca2Cu3O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| HgBa2Ca3Cu4O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2Ca2Cu3O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8 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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