This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1111/jmi.12900 in citations.
Please use the identifier: http://hdl.handle.net/2128/27814 in citations.
Plasmons in MoS 2 studied via experimental and theoretical correlation of energy loss spectra
Plasmons in MoS 2 studied via experimental and theoretical correlation of energy loss spectra
This paper takes a fundamental view of the electron energy loss spectra of monolayer and few layer MoS2. The dielectric function of monolayer MoS2 is compared to the experimental spectra to give clear criteria for the nature of different signals. Kramers–Krönig analysis allows a direct extraction of...
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Personal Name(s): | MOYNIHAN, EOIN (Corresponding author) |
---|---|
ROST, STEFAN / O'CONNELL, EOGHAN / RAMASSE, QUENTIN / FRIEDRICH, CHRISTOPH / BANGERT, URSEL | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: | Journal of microscopy, 279 (2020) 3, S. 256 - 264 |
Imprint: |
Oxford [u.a.]
Wiley-Blackwell
2020
|
DOI: |
10.1111/jmi.12900 |
Document Type: |
Journal Article |
Research Program: |
Optoelectronic properties of materials for photovoltaic and photonic applications Controlling Configuration-Based Phenomena Controlling Spin-Based Phenomena |
Link: |
Published on 2020-05-13. Available in OpenAccess from 2021-05-13. Restricted |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/27814 in citations.
This paper takes a fundamental view of the electron energy loss spectra of monolayer and few layer MoS2. The dielectric function of monolayer MoS2 is compared to the experimental spectra to give clear criteria for the nature of different signals. Kramers–Krönig analysis allows a direct extraction of the dielectric function from the experimental data. However this analysis is sensitive to slight changes in the normalisation step of the data pretreatment. Density functional theory provides simulations of the dielectric function for comparison and validation of experimental findings. Simulated and experimental spectra are compared to isolate the π and π + σ surface plasmon modes in monolayer MoS2. Single‐particle excitations obscure the plasmons in the monolayer spectrum and momentum resolved measurements give indication of indirect interband transitions that are excited due to the large convergence and collection angles used in the experiment. |