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- W2856431410 abstract "Quasi-two-dimensional manganese thiophosphate, $mathrm{MnP}{mathrm{S}}_{3}$, is interesting due to its two-dimensional antiferromagnetic structure observed at low temperatures as well as possible technological applications. While the spectroscopic properties of bulk $mathrm{MnP}{mathrm{S}}_{3}$ structures have been extensively studied, the spectroscopic characteristics of freestanding $mathrm{MnP}{mathrm{S}}_{3}$ layers are yet to be explored. We present an experimental study on the spectroscopic properties of a freestanding $mathrm{MnP}{mathrm{S}}_{3}$ single layer obtained through exfoliation from bulk $mathrm{MnP}{mathrm{S}}_{3}$. We find that the position of the main peak in the electron-energy-loss spectrum (EELS) is shifted from approximately 19 eV in bulk $mathrm{MnP}{mathrm{S}}_{3}$ to 15 eV in single $mathrm{MnP}{mathrm{S}}_{3}$ layer. Theoretical calculations show that this peak corresponds to a volume plasmon in bulk $mathrm{MnP}{mathrm{S}}_{3}$ and a damped plasmon peak in single-layer $mathrm{MnP}{mathrm{S}}_{3}$. In addition, the dispersion of this peak was investigated using momentum-resolved electron-energy-loss spectroscopy. The peak dispersion for the single-layer $mathrm{MnP}{mathrm{S}}_{3}$ displays a square-root behavior characteristic of a two-dimensional plasmon. We show that EELS spectra provide both a means to identify single-layer $mathrm{MnP}{mathrm{S}}_{3}$ from bulk structures and also show the effects of low dimensionality on the electronic excitations." @default.
- W2856431410 created "2018-07-19" @default.
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- W2856431410 date "2018-07-10" @default.
- W2856431410 modified "2023-10-05" @default.
- W2856431410 title "Spectroscopic properties of a freestanding<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>MnP</mml:mi><mml:msub><mml:mi mathvariant=normal>S</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>single layer" @default.
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- W2856431410 doi "https://doi.org/10.1103/physrevb.98.035417" @default.
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