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Screening effects i...
Screening effects in metal sculptured thin films studied with terahertz Mueller matrix ellipsometry
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- Hofmann, Tino (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten,University of North Carolina Charlotte, NC 28223 USA; University of Nebraska, NE USA
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- Knight, S. (author)
- University of Nebraska, NE USA
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- Sekora, D. (author)
- University of Nebraska, NE USA
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- Schmidt, D. (author)
- University of Nebraska, NE USA
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- Herzinger, C. M. (author)
- JA Woollam Co Inc, NE 68508 USA
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- Woollam, J. A. (author)
- JA Woollam Co Inc, NE 68508 USA
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- Schubert, E. (author)
- University of Nebraska, NE USA
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- Schubert, Mathias (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten,University of Nebraska, NE USA
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(creator_code:org_t)
- ELSEVIER SCIENCE BV, 2017
- 2017
- English.
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In: Applied Surface Science. - : ELSEVIER SCIENCE BV. - 0169-4332 .- 1873-5584. ; 421, s. 513-517
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The anisotropic optical dielectric functions of a metal (cobalt) slanted columnar thin film deposited by electronbeam glancing angle deposition are reported for the terahertz (THz) frequency domain before and after the slanted columnar thin film was passivated by a conformal alumina coating. A simple effective medium dielectric function homogenization approach which describes isolated, electrically conductive columns rendering the thin film biaxial (orthorhombic) is used to model the observed optical responses. Upon passivating the slanted columnar thin film with a 3 nm thick alumina film an increase of both the real and the imaginary part of the dielectric function for all major polarizability directions is found and attributed to screening effects within the spatially coherent metal nanocolumns. (C) 2016 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Terahertz; Generalized ellipsometry; Bruggeman effective medium; Glancing angle deposition; Sculptured thin film
Publication and Content Type
- ref (subject category)
- art (subject category)
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