dc.contributor.author
Patoka, Piotr
dc.contributor.author
Ulrich, Georg
dc.contributor.author
Nguyen, Ariana E.
dc.contributor.author
Bartels, Ludwig
dc.contributor.author
Dowben, Peter A.
dc.contributor.author
Turkowski, Volodymyr
dc.contributor.author
Rahman, Talat S.
dc.contributor.author
Hermann, Peter
dc.contributor.author
Kästner, Bernd
dc.contributor.author
Hoehl, Arne
dc.contributor.author
Ulm, Gerhard
dc.contributor.author
Rühl, Eckart
dc.date.accessioned
2018-06-08T10:38:00Z
dc.date.available
2017-02-13
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/20787
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-24086
dc.description.abstract
Nanoscale plasmonic phenomena observed in single and bi-layers of molybdenum
disulfide (MoS2) on silicon dioxide (SiO2) are reported. A scattering type
scanning near-field optical microscope (s-SNOM) with a broadband synchrotron
radiation (SR) infrared source was used. We also present complementary optical
mapping using tunable CO2-laser radiation. Specifically, there is a
correlation of the topography of well-defined MoS2 islands grown by chemical
vapor deposition, as determined by atomic force microscopy, with the infrared
(IR) signature of MoS2. The influence of MoS2 islands on the SiO2 phonon
resonance is discussed. The results reveal the plasmonic character of the MoS2
structures and their interaction with the SiO2 phonons leading to an
enhancement of the hybridized surface plasmon-phonon mode. A theoretical
analysis shows that, in the case of monolayer islands, the coupling of the
MoS2 optical plasmon mode to the SiO2 surface phonons does not affect the
infrared spectrum significantly. For two-layer MoS2, the coupling of the extra
inter-plane acoustic plasmon mode with the SiO2 surface transverse phonon
leads to a remarkable increase of the surface phonon peak at 794 cm−1. This is
in agreement with the experimental data. These results show the capability of
the s-SNOM technique to study local multiple excitations in complex non-
homogeneous structures.
en
dc.format.extent
11 Seiten
dc.rights.uri
http://www.osapublishing.org/submit/review/copyright_permissions.cfm#posting
dc.subject.ddc
500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::572 Biochemie
dc.title
Nanoscale plasmonic phenomena in CVD-grown MoS2 monolayer revealed by ultra-
broadband synchrotron radiation based nano-FTIR spectroscopy and near-field
microscopy
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation
Optics Express. - 24 (2016), 2, S. 1154-1164
dc.identifier.sepid
48215
dcterms.bibliographicCitation.doi
10.1364/OE.24.001154
dcterms.bibliographicCitation.url
http://dx.doi.org/10.1364/OE.24.001154
refubium.affiliation
Physik
de
refubium.mycore.fudocsId
FUDOCS_document_000000026038
refubium.resourceType.isindependentpub
no
refubium.mycore.derivateId
FUDOCS_derivate_000000007438
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
1094-4087