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Experimental evidence of the spin selection rule in KLL Auger transition

D. J. Huang·W. P. Wu·C. F. Chang·J. Chen·S. C. Chung·L. H. Tjeng·C. T. Chen·S. G. Shyu·C. C. Wu
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Abstract

With on- and off- resonant excitation photons, spin-resolved Auger electron spectra of epitaxial CrO$_{2}$ thin films show an experimental evidence of the spin-selective KLL Auger decay. The on-resonance O KLL Auger electrons are found to be highly spin-polarized, while the off-resonance ones with almost zero spin polarization. These results lead to conclude that the two-hole final state in KLL Auger decay is a spin-singlet. Applications to spin-resolved absorption spectroscopy are discussed.

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D. J. Huang, W. P. Wu, C. F. Chang, J. Chen, S. C. Chung, L. H. Tjeng, C. T. Chen, S. G. Shyu, C. C. Wu. 2001-07-12. Experimental evidence of the spin selection rule in KLL Auger transition. https://arxiv.org/abs/cond-mat/0107234

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