Abrupt Transition in Quasiparticle Dynamics at Optimal Doping in a Cuprate Superconductor System
N. Gedik, M. Langner, J. Orenstein, S. Ono, Yasushi Abe, Yoichi Ando
DOI 10.1103/PhysRevLett.95.117005 · Physical Review Letters
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Abstract
We report time-resolved measurements of the photoinduced change in reflectivity, ΔR, in the Bi2Sr2Ca1−yDyyCu2O8+δ (BSCCO) system of cuprate superconductors as a function of hole concentration. We find that the kinetics of quasiparticle decay and the sign of ΔR both change abruptly where the superconducting transition temperature Tc is maximal. These coincident changes suggest that a sharp transition in quasiparticle dynamics takes place precisely at optimal doping in the BSCCO system.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2Ca1-yDyyCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 94.5 | Pressure not reported | onset |
| Bi2Sr2Ca1-yDyyCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 71 | Pressure not reported | onset |
| Bi2Sr2Ca1-yDyyCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 77 | Pressure not reported | onset |
| YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 71 | Pressure not reported | unknown |
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