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Noble-metal dark-edge fermiology: core-hole memory and the "Zeeman Auger" effect



Eric L. Shirley, Joseph Woicik, Conan Weiland, Ahmed Rumaiz, Charles Cardot, Joshua Kas, John Rehr


Gold and platinum have the face-centered-cubic crystal structure, are considered noble metals, and differ by one in atomic number. Near-edge M4,5 x-ray absorption and resonant M4,5N6,7N6,7 Auger spectroscopy reveal "dark" edges and a photon-energy-dependence of Auger electron (4f12 final-state) energy distributions. These results are a direct consequence of a delayed onset of d-to-f transitions and space quantization of the 3d hole prepared by photoexcitation that is predominantly d-to-p vs d-to-f. This study showcases the centrifugal barrier for f-wave electrons and spectral evolution arising from the existence of multiple intermediate-state channels and final states for both photoexcitation and Auger decay.
Physical Review Letters


Auger, Au, Pt, multiplet, resonant, x-ray absorption


Shirley, E. , Woicik, J. , Weiland, C. , Rumaiz, A. , Cardot, C. , Kas, J. and Rehr, J. (2022), Noble-metal dark-edge fermiology: core-hole memory and the "Zeeman Auger" effect, Physical Review Letters, [online], (Accessed April 16, 2024)
Created January 12, 2022, Updated November 29, 2022