J. Ma et al., LOCALIZED ELECTRONIC STATES AND PHOTOEMISSION SUPERCONDUCTION CONDENSATE IN BI2SR2CACU2O8+X, Solid state communications, 94(1), 1995, pp. 27-32
We present the first detailed angle-resolved photoemission evidence th
at there are two types of carriers that contribute to the photoemissio
n superconducting condensate in Bi2Sr2CaCu2O8+x. Our data indicate tha
t both itinerant and somewhat localized normal state carriers can cont
ribute to the formation of Cooper pairs.