Mdn. Regueiro et al., XAS SUM-RULE ANALYSIS OF THE OUT-OF-PLANE CHARACTER OF CU 3D-HOLES INLA2-XSRXCUO4, Physica. C, Superconductivity, 235, 1994, pp. 1053-1054
The sum rule derived for linear dichroism in X-ray absorption is appli
ed to La2-xSrxCuO4 to obtain quantitative, model-independent informati
on about the out-of-plane character of 3d-holes. The interest of measu
ring both the L(3) and L(2) edges to perform similar XAS sum-rule anal
ysis in higher-T-c cuprates is discussed.