Correlation of dopant-induced optical transitions with superconductivity in La2−xSrxCuO4−δ
S. Etemad, D. E. Aspnes, M. K. Kelly, R. Thompson, J.-M. Tarascon, G. W. Hull
DOI 10.1103/PhysRevB.37.3396 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Optical data for a series of La2−xSrxCuO4−δ solid solutions from x=0 to x=0.30 reveal several structures, including a relatively intense, dopant-induced absorption band around 0.5 eV whose oscillator strength tracks the Meissner effect and Tc measured on the same set of samples. The dopant-induced optical-transition–superconductivity correlation strongly supports an electronically driven superconductivity mechanism mediated by the 0.5-eV excitation.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 40 | Pressure not reported | onset |
| YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Competing phases in the superconducting state of La2−xSrxCuO4: Temperature- and magnetic-field-dependent quasiparticle relaxation measurements
similarity 0.98G. Bianchi et al.
Source status unknown — claims are unverified
Evidence for phonon-like charge and spin fluctuations from an analysis of angle-resolved photoemission spectra of La2−xSrxCuO4 superconductors
similarity 0.97G. Mazza et al.
Source status unknown — claims are unverified
New Magnetic Coherence Effect in Superconducting La2−xSrxCuO4
similarity 0.97T. E. Mason et al.
Source status unknown — claims are unverified
Two superconducting transitions in single-crystal La2−xBaxCuO4
similarity 0.97X. Y. Tee et al.
Source status unknown — claims are unverified
Disappearance of superconductivity in overdoped La2−xSrxCuO4 at a structural phase boundary
similarity 0.97H. Takagi et al.
Source status unknown — claims are unverified
Superconducting and normal-state properties of La1.85Sr0.15Cu1−xGaxBO4
similarity 0.97Marta Z. Cieplak et al.
Source status unknown — claims are unverified