Spin-polarized electron energy loss spectroscopy on Fe(100) thin films grown on Ag(100)

We report sharp spin-dependent energy loss features in electron scattering from bcc Fe(100) thin films grown on Ag(100). Majority spin features are observed at ~1.8 and 2.5 eV energy loss, and a minority spin feature is observed at ~2.0 eV energy loss. The majority spin peaks are attributed to spin-...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2006-10, Vol.18 (39), p.8829-8836
Main Authors: Komesu, Takashi, Waddill, G D, Tobin, J G
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron and ion emission by liquids and solids
impact phenomena
Electron energy loss spectra
Exact sciences and technology
Impact phenomena (including electron spectra and sputtering)
Physics
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Summary:We report sharp spin-dependent energy loss features in electron scattering from bcc Fe(100) thin films grown on Ag(100). Majority spin features are observed at ~1.8 and 2.5 eV energy loss, and a minority spin feature is observed at ~2.0 eV energy loss. The majority spin peaks are attributed to spin-flip exchange scattering from the Fe films. The minority spin peak is attributed to non-flip exchange scattering with an energy corresponding to the separation between occupied and unoccupied minority spin bands. The observed peak energies compare favourably with electronic structure calculations for Fe and with spin-resolved photoemission and inverse photoemission results.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/18/39/013