Japanese Journal of Applied Physics · 1987 · 35 citations · 7 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsSolid State PhysicsSpectroscopyPhase TransitionsStrongly Correlated Electron SystemsSuperconducting MaterialsCuprate SuperconductorsDoppler Broadening AnalysisHigh-temperature SuperconductivityHigh-temperature SuperconductorsLine Shape AnalysisPhase Transition TemperatureSuperconducting Critical TemperatureSuperconducting Phase Transitions
Positron annihilation Doppler-broadening measurements have been performed on La-Sr-Cu-O and Y-Ba-Cu-O systems, which are superconductors with high transition temperatures. The line shape parameter of Doppler-broadened spectra shows anomalous increases near the transition temperature.
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Evidence for superconductivity above 40 K in the La-Ba-Cu-O compound system
C. W. Chu, P. H. Hor, R. L. Meng et al. · Physical Review Letters · 1987 · 1.5K citations · Full text
High T<sub>c</sub>Superconductivity of La-Ba-Cu Oxides
Shin‐ichi Uchida, H. Takagi, K. Kitazawa et al. · Japanese Journal of Applied Physics · 1987 · 490 citations
Lifetime of Positrons in Superconducting Lead
B. Green, L. Madansky · Physical Review · 1956 · 20 citations