Experimental evidence of the spin selection rule in KLL Auger transition

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

arxiv: cond-mat/0107234 · v2 · submitted 2001-07-11 · ❄️ cond-mat.str-el · cond-mat.mtrl-sci

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

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C. C. Wu

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classification ❄️ cond-mat.str-el cond-mat.mtrl-sci

keywords augerdecayevidenceexperimentalspinspin-resolvedabsorptionalmost

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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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Experimental evidence of the spin selection rule in KLL Auger transition

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