dc.contributor.author | Nerbø, Ingar Stian | |
dc.contributor.author | Le Roy, Sebastien | |
dc.contributor.author | Foldyna, Martin | |
dc.contributor.author | Søndergård, Elin | |
dc.contributor.author | Kildemo, Morten | |
dc.date.accessioned | 2019-10-11T11:12:23Z | |
dc.date.available | 2019-10-11T11:12:23Z | |
dc.date.created | 2011-10-27T10:46:00Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Optics Express. 2011, 19 (13), 12551-12561. | nb_NO |
dc.identifier.issn | 1094-4087 | |
dc.identifier.uri | http://hdl.handle.net/11250/2621587 | |
dc.description.abstract | The formation of GaSb nanopillars by low energy ion sputtering is studied in real-time by spectroscopic Mueller matrix ellipsometry, from the initial formation in the smooth substrate until nanopillars with a height of 200 – 300 nm are formed. As the nanopillar height increased above 100 nm, coupling between orthogonal polarization modes was observed. Ex situ angle resolved Mueller polarimetry measurements revealed a 180° azimuth rotation symmetry in the off-diagonal Mueller elements, which can be explained by a biaxial material with different dielectric functions εx and εy in a plane parallel to the substrate. This polarization coupling can be caused by a tendency for local direction dependent alignment of the pillars, and such a tendency is confirmed by scanning electron microscopy. Such observations have not been made for GaSb nanopillars shorter than 100 nm, which have optical properties that can be modeled as a uniaxial effective medium. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Optical Society of America | nb_NO |
dc.title | Real-time in situ Mueller matrix ellipsometry of GaSb nanopillars: observation of anisotropic local alignment | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 12551-12561 | nb_NO |
dc.source.volume | 19 | nb_NO |
dc.source.journal | Optics Express | nb_NO |
dc.source.issue | 13 | nb_NO |
dc.identifier.doi | 10.1364/OE.19.012551 | |
dc.identifier.cristin | 848321 | |
dc.description.localcode | Open Access | nb_NO |
cristin.unitcode | 194,66,20,0 | |
cristin.unitname | Institutt for fysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |