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Terahertz permittivity parameters of monoclinic single crystal lutetium oxyorthosilicate
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering. Lund Univ, Sweden; Lund Univ, Sweden. (Competence Center for III-Nitride Technology C3NiT-Janzen; Terahertz Materials Analysis Center (THeMAC))
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering. Lund Univ, Sweden; Lund Univ, Sweden. (Competence Center for III-Nitride Technology C3NiT-Janzen; Terahertz Materials Analysis Center (THeMAC))ORCID iD: 0000-0001-7344-1518
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering. (Competence Center for III-Nitride Technology C3NiT-Janzen)ORCID iD: 0000-0003-4902-5383
Univ Nebraska, NE 68588 USA.
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2024 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 124, no 3, article id 032101Article in journal (Refereed) Published
Abstract [en]

The anisotropic permittivity parameters of monoclinic single crystal lutetium oxyorthosilicate, Lu2SiO5 (LSO), have been determined in the terahertz spectral range. Using terahertz generalized spectroscopic ellipsometry (THz-GSE), we obtained the THz permittivities along the a, b, and c? crystal directions, which correspond to the ea; eb, and ec? on-diagonal tensor elements. The associated off diagonal tensor element eac? was also determined experimentally, which is required to describe LSO's optical response in the monoclinic a-c crystallographic plane. From the four tensor elements obtained in the model fit, we calculate the direction of the principal dielectric axes in the a-c plane. We find good agreementwhen comparing THz-GSE permittivities to the static permittivity tensors from previous infrared and density functional theory studies.

Place, publisher, year, edition, pages
AIP Publishing , 2024. Vol. 124, no 3, article id 032101
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-200971DOI: 10.1063/5.0177304ISI: 001144147000012OAI: oai:DiVA.org:liu-200971DiVA, id: diva2:1839699
Note

Funding Agencies|Knut and Alice Wallenbergs Foundation [2018.0071]; Swedish Research Council VR Award [2016-00889, 2022-04812]; Swedish Foundation for Strategic Research Grant [RIF14-055, EM16-0024]; Swedish Governmental Agency for Innovation Systems VINNOVA under the Competence Center Program [2022-03139]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoeping University, Faculty Grant SFO Mat LiU [2009-00971]; National Science Foundation [DMR 1808715, OIA-2044049]; Air Force Office of Scientific Research Award [FA9550-19-S-0003, FA9550-21-1-0259]; University of Nebraska Foundation; NanoLund, Lund University; J. A. Woollam Foundation

Available from: 2024-02-21 Created: 2024-02-21 Last updated: 2024-02-21

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Knight, Sean RobertRichter, SteffenPapamichail, AlexisStanishev, ValleryKuhne, PhilippDarakchieva, Vanya
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