Abstract
Byline: Moonsoo Kang, G. Blumberg, M.V. Klein (a) Low energy Raman continuum and the redistribution of the continuum to a peak ('2[DELTA]-peak') in the superconducting state have been studied in TlBa(Ca)CuO superconductors with single CuO.sub.2 layer (Tl-2201) and double CuO.sub.2 layer (Tl-2212). The Coulomb screening effect is observed to be much stronger in Tl-2201. The change from Tl-2201 to Tl-2212 of the normalized A.sub.1g 2[DELTA]-peak intensity is identical within experimental error to that of normalized A.sub.1g continuum intensity. Author Affiliation: (a) Department of Physics, University of Illinois at Urbana-Champaign 1110 W. Green St., Urbana, IL 61801, USA