Feasibility of measuring surface electron spin dynamics by inelastic scattering of metastable helium atoms
نویسندگان
چکیده
The application of inelastic scattering of monoenergetic beams of metastable 2S helium atoms (He*) from surfaces of magnetic insulators to study the dynamical properties of surface electron-spin systems is considered. The study is based on a calculation of the differential inelastic reflection coefficient for magnetic scattering using a distorted-wave Born approximation approach. The NiO~001! surface is used as an example. The adiabatic scattering potential as well as the exchange coupling between a metastable He atom and the surface electron spins are determined by a configuration interaction calculation for an embedded NiO cluster model. The efficiency of measuring an inelastic magnetic event based on this calculation is estimated to be ;10. @S0163-1829~98!01028-5#
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