Design and performance of a spin-polarized electron energy loss spectrometer with high momentum resolution | Zendy

D. Vasilyev | Zendy; J. Kirschner | Zendy

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Design and performance of a spin-polarized electron energy loss spectrometer with high momentum resolution

Author(s) -

D. Vasilyev,

J. Kirschner

Publication year - 2016

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.4961471

Subject(s) - spectrometer , electron , resolution (logic) , momentum (technical analysis) , physics , electron energy loss spectroscopy , high resolution , spin (aerodynamics) , nuclear physics , atomic physics , energy (signal processing) , materials science , optics , remote sensing , computer science , finance , quantum mechanics , artificial intelligence , economics , thermodynamics , geology

We describe a new "complete" spin-polarized electron energy loss spectrometer comprising a spin-polarized primary electron source, an imaging electron analyzer, and a spin analyzer of the "spin-polarizing mirror" type. Unlike previous instruments, we have a high momentum resolution of less than 0.04 Å(-1), at an energy resolution of 90-130 meV. Unlike all previous studies which reported rather broad featureless data in both energy and angle dependence, we find richly structured spectra depending sensitively on small changes of the primary energy, the kinetic energy after scattering, and of the angle of incidence. The key factor is the momentum resolution.

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