Fig. 53: a) The solid line gives the spin-integrated circularly polarised resonant photoemission spectrum. The photon energy is set at the Cu L3 absorption peak (h = 931.5 eV). The spectrum is separated into its singlet () and triplet () components as explained in the text. b) The spin polarisation curve () corresponding to the spectra in Figure 53a. c) The Fermi level region taken with good statistics and separated into singlet () and triplet () components.

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