2020
DOI: 10.48550/arxiv.2005.05937
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Unexpectedly large electron correlation measured in Auger spectra of ferromagnetic iron thin films: orbital-selected Coulomb and exchange contributions

R. Gotter,
A. Verna,
M. Sbroscia
et al.

Abstract: A set of electron-correlation energies as large as 10 eV have been measured for a magnetic 2ML Fe film deposited on Ag(001). By exploiting the spin selectivity in angle-resolved Auger-photoelectron coincidence spectroscopy and the Cini-Sawatzky theory, the core-valence-valence Auger spectrum of a spin-polarized system have been resolved: correlation energies have been determined for each individual combination of the two holes created in the four sub-bands involved in the decay: majority and minority spin, as … Show more

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(11 citation statements)
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“…In general, the relative weight of antiparallel spin versus parallel spin emission can be expressed as a function of |∆m| = |m 1 − m 2 |, where m 1 and m 2 are the m values of the two emitted electrons; the higher |∆m|, the higher the probability of PS emission [21]. In this experiment, for Auger electrons emitted In analogy to previous AR-APECS experiment [24,28], the analyzers pairs selecting photoelectrons emitted close to the polarization vector will be termed as antiparallel spin configuration (AS) , while pairs with the photoelectron far from will be termed parallel spin configuration (PS).…”
Section: Methodsmentioning
confidence: 88%
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“…In general, the relative weight of antiparallel spin versus parallel spin emission can be expressed as a function of |∆m| = |m 1 − m 2 |, where m 1 and m 2 are the m values of the two emitted electrons; the higher |∆m|, the higher the probability of PS emission [21]. In this experiment, for Auger electrons emitted In analogy to previous AR-APECS experiment [24,28], the analyzers pairs selecting photoelectrons emitted close to the polarization vector will be termed as antiparallel spin configuration (AS) , while pairs with the photoelectron far from will be termed parallel spin configuration (PS).…”
Section: Methodsmentioning
confidence: 88%
“…The surface quality was monitored by RHEED, photoemission spectroscopy and the X-ray absorption at the Fe L 23 edge. The Fe thickness was estimated by using evaporation conditions (time and rate) identical to those used to achieve two complete RHEED oscillations [32] in a previous experiment performed on Fe/Ag(001) with the same experimental setup [28].…”
Section: Methodsmentioning
confidence: 99%
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