Infrared ellipsometry of highly oriented pyrolytic graphite

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Authors

HUMLÍČEK Josef NEBOJSA Alois MÜNZ Filip MIRIC Milka GAJIC Rados

Year of publication 2011
Type Article in Periodical
Magazine / Source Thin Solid Films
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.1016/j.tsf.2010.12.091
Field Solid matter physics and magnetism
Keywords Ellipsometry; Infrared; Graphite
Description We study the anisotropic response of highly oriented pyrolytic graphite (HOPG) in mid-infrared range, utilizing the potential of spectroscopic ellipsometry. We aim at the parameters of the infrared-active vibrations of E(1u) and A(2u) symmetry, and examine the phenomena related to the strong uniaxial anisotropy of HOPG. We explain the appearance of the weakly polar out-of-plane vibration in the elipsometric spectra taken on cleaved planes. We find a detectable Fano-type behavior of the in-plane phonon.
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