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Screening effects i...
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Hofmann, TinoLinköpings universitet,Halvledarmaterial,Tekniska fakulteten,University of North Carolina Charlotte, NC 28223 USA; University of Nebraska, NE USA
(author)
Screening effects in metal sculptured thin films studied with terahertz Mueller matrix ellipsometry
- Article/chapterEnglish2017
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ELSEVIER SCIENCE BV,2017
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LIBRIS-ID:oai:DiVA.org:liu-141109
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-141109URI
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https://doi.org/10.1016/j.apsusc.2016.12.200DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Funding Agencies|National Science Foundation (NSF) through the Nebraska Materials Research Science and Engineering Center [DMR 1420645]; Center for Nanohybrid Functional Materials [EPS-1004094]; Swedish Agency for Innovation Systems [2014-04712]; University of Nebraska-Lincoln; J.A. Woollam Foundation
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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.
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Knight, S.University of Nebraska, NE USA
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Sekora, D.University of Nebraska, NE USA
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Schmidt, D.University of Nebraska, NE USA
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Herzinger, C. M.JA Woollam Co Inc, NE 68508 USA
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Woollam, J. A.JA Woollam Co Inc, NE 68508 USA
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Schubert, E.University of Nebraska, NE USA
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Schubert, MathiasLinköpings universitet,Halvledarmaterial,Tekniska fakulteten,University of Nebraska, NE USA(Swepub:liu)schma39
(author)
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Linköpings universitetHalvledarmaterial
(creator_code:org_t)
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In:Applied Surface Science: ELSEVIER SCIENCE BV421, s. 513-5170169-43321873-5584
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