Negative plasmon dispersion in 2H-NbS2 beyond the charge-density-wave interpretation
We examine the experimental and theoretical electron-energy loss spectra in 2 H - ${\mathrm{Cu}}_{0.2}$ NbS _2 and find that the 1 eV plasmon in this material does not exhibit the regular positive quadratic plasmon dispersion that would be expected for a normal broad-parabolic-band system. Instead w...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2016-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/18/10/103050 |