Abstract
The linearly polarized Cu K and Fe K pre-edge absorption spectra of single-crystal Bi 2Sr 2CaCu 2O 8 and FeCO 3 are investigated in the transmission geometry. Using the orientation-dependent selection rules for 1s → 3d quadrupole transitions, the angular dependence of the spectra are analyzed and unoccupied m-resolved densities of 3d-like states are determined.
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