Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3626846
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Funding
- Army Research Office [W911NF-09-C-0097]
- National Science Foundation [MRSEC DMR-0820521, MRI DMR-0922937, DMR-0907475, ECCS-0846329, EPS-1004094]
- University of Nebraska-Lincoln
- J.A. Woollam Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [846329] Funding Source: National Science Foundation
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The anisotropic optical dielectric functions of a metal (cobalt) slanted columnar thin film deposited by electron-beam glancing angle deposition are reported for the terahertz (THz) frequency domain using generalized spectroscopic ellipsometry. We employ a simple effective medium dielectric function homogenization approach to describe the observed optical response. The approach describes isolated, electrically conductive columns which render the thin film biaxial (orthorhombic). Our findings suggest controlled variability of dielectric polarizability and anisotropy in the THz spectral range by choice of geometry, material, and structure. (C) 2011 American Institute of Physics. [doi:10.1063/1.3626846]
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