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Unexpectedly large electron correlation measured in Auger spectra of ferromagnetic iron thin films: orbital-selected Coulomb and exchange contributions

Autor: Gotter, R., Verna, A., Sbroscia, M., Moroni, R., Bisio, F., Iacobucci, S., Offi, F., Vaidya, S. R., Ruocco, A., Stefani, G.

Publikováno v: Phys. Rev. Lett. 125, 067202 (2020)

A set of electron-correlation energies as large as 10 eV have been measured for a magnetic 2ML Fefilm deposited on Ag(001). By exploiting the spin selectivity in angle-resolved Auger-photoelectroncoincidence spectroscopy and the Cini-Sawatzky theory,

Externí odkaz: http://arxiv.org/abs/2005.05937

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A distributional approach to fractional Sobolev spaces and fractional variation: asymptotics I

Autor: Comi, Giovanni E., Stefani, G.

Publikováno v: Rev. Mat. Complut. 36, 491-569 (2023)

We continue the study of the space $BV^\alpha(\mathbb{R}^n)$ of functions with bounded fractional variation in $\mathbb{R}^n$ of order $\alpha\in(0,1)$ introduced in arXiv:1809.08575, by dealing with the asymptotic behaviour of the fractional operato

Externí odkaz: http://arxiv.org/abs/1910.13419

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Space-Charge effect in electron time-of-flight analyzer for high-energy photoemission spectroscopy

Autor: Greco, G., Verna, A., Offi, F., Stefani, G.

Publikováno v: Journal of Electron Spectroscopy and Related Phenomena, vol. 212 pp. 86-93 (2016)

The space-charge effect, due to the instantaneous emission of many electrons after the absorption of a single photons pulse, causes distortion in the photoelectron energy spectrum. Two calculation methods have been applied to simulate the expansion d

Externí odkaz: http://arxiv.org/abs/1906.03152

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