liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Electromagnon excitation in cupric oxide measured by Fabry-Perot enhanced terahertz Mueller matrix ellipsometry
Univ Nebraska, NE 68588 USA.
Univ Oxford, England.
Univ Nebraska, NE 68588 USA.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering. Univ Nebraska, NE 68588 USA; Leibniz Inst Polymerforsch Dresden eV, Germany.ORCID iD: 0000-0001-6238-663X
2019 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, article id 1353Article in journal (Refereed) Published
Abstract [en]

Here we present the use of Fabry-Perot enhanced terahertz (THz) Mueller matrix ellipsometry to measure an electromagnon excitation in monoclinic cupric oxide (CuO). As a magnetically induced ferroelectric multiferroic, CuO exhibits coupling between electric and magnetic order. This gives rise to special quasiparticle excitations at THz frequencies called electromagnons. In order to measure the electromagnons in CuO, we exploit single-crystal CuO as a THz Fabry-Perot cavity to resonantly enhance the excitations signature. This enhancement technique enables the complex index of refraction to be extracted. We observe a peak in the absorption coefficient near 0.705 THz and 215 K, which corresponds to the electromagnon excitation. This absorption peak is observed along only one major polarizability axis in the monoclinic a-c plane. We show the excitation can be represented using the Lorentz oscillator model, and discuss how these Lorentz parameters evolve with temperature. Our findings are in excellent agreement with previous characterizations by THz time-domain spectroscopy (THz-TDS), which demonstrates the validity of this enhancement technique.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2019. Vol. 9, article id 1353
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-154555DOI: 10.1038/s41598-018-37639-8ISI: 000457616300241PubMedID: 30718629OAI: oai:DiVA.org:liu-154555DiVA, id: diva2:1290516
Note

Funding Agencies|National Science Foundation [DMR 1808715]; Air Force Office of Scientific Research [FA9550-18-1-0360]; Nebraska Materials Research Science and Engineering Center [DMR 1420645]; EPSRC [EP/N034872/1]; University of Nebraska Foundation; J.A. Woollam Foundation

Available from: 2019-02-20 Created: 2019-02-20 Last updated: 2019-03-26

Open Access in DiVA

fulltext(1600 kB)69 downloads
File information
File name FULLTEXT01.pdfFile size 1600 kBChecksum SHA-512
353ec1af867e420c1b719d262eed18deb29c930c94b26679e959614fe52587450e22eaab493f45ccd02d42408c08c10a9faafba28dbb3589bc91d7a892062153
Type fulltextMimetype application/pdf

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Schubert, Mathias
By organisation
Semiconductor MaterialsFaculty of Science & Engineering
In the same journal
Scientific Reports
Atom and Molecular Physics and Optics

Search outside of DiVA

GoogleGoogle Scholar
Total: 69 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 86 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf