Cg. Olson et al., THE 1-EV PEAK - A CONSISTENT FEATURE OF THE CUPRATE SUPERCONDUCTORS, Journal of physics and chemistry of solids, 56(12), 1995, pp. 1879-1880
We report data supporting the view that the sometimes controversial 1
eV peak in the angle-resolved photoemission spectrum of YBa2Cu3O6.9 is
, in fact, representative of cuprate superconductors. Detailed spectra
for YBa2Cu3O6.9 show that the peak is composed of a family of initial
states of both even and odd symmetry.