Spin polarization (SP) measurements of the secondary electron yield from ferromagnetic interfaces is a sensitive probe of surface and interface magnetism. By exploiting the jumps of the total photoionization cross section in correspondence of the L-edge excitation in transition metals one introduces a chemical sensitivity in the SP via the enhancement of the secondary emission from a specific magnetic or non magnetic specie at the interface. The hν-dependence of the SP in overlayer experiments allows to derive accurately the total and spin-dependent attenuation lengths for secondary electrons in non-magnetic and ferromagnetic materials.
Spin filtering effect on secondary electrons crossing an iron overlayer / F. Sirotti, G. Panaccione, G. Rossi. - 4:C9(1994), pp. 175-178. ((Intervento presentato al convegno European Symposium on Frontiers in Science and Technology with Synchrotron Radiation tenutosi a Aix-en-Provence nel 1994.
Spin filtering effect on secondary electrons crossing an iron overlayer
G. RossiUltimo
1994
Abstract
Spin polarization (SP) measurements of the secondary electron yield from ferromagnetic interfaces is a sensitive probe of surface and interface magnetism. By exploiting the jumps of the total photoionization cross section in correspondence of the L-edge excitation in transition metals one introduces a chemical sensitivity in the SP via the enhancement of the secondary emission from a specific magnetic or non magnetic specie at the interface. The hν-dependence of the SP in overlayer experiments allows to derive accurately the total and spin-dependent attenuation lengths for secondary electrons in non-magnetic and ferromagnetic materials.Pubblicazioni consigliate
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