Journal Title

Physical Review Letters

Publication Date

9-17-1979

Abstract

Electron-energy-loss spectra of stage-1 K-intercalated graphite single crystals were obtained with a scanning transmission electron microscope. The complex dielectric function with electric polarization perpendicular to the c axis was derived by Kramers-Kronig analysis. The energy-loss peak at 2.5 eV is consistent with previous optical measurements, while the splitting of the one at 27 eV can be interpreted by folding the Brillouin zone of pristine graphite. Splittings and shifts of the interband transitions were observed and compared with calculations.

Subjects

Electron beams; Electron energy loss spectroscopy; Graphite intercalation compounds

Publication Information

Copyright 1979 American Physical Society. The original published version of this article may be found at http://dx.doi.org/10.1103/PhysRevLett.43.882.

DOI

10.1103/PhysRevLett.43.882

Peer-Reviewed

Yes

Document Type

Journal Article

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