Publication
Title
Competition of disorder and electron-phonon coupling in (0≤x≤2) as evidenced by Raman spectroscopy
Author
Abstract
The vibrational properties of 2H-TaSe2-xSx (0≤x≤2) single crystals were probed using Raman spectroscopy and density functional theory calculations. The end members revealed two out of four symmetry-predicted Raman active modes, together with the pronounced two-phonon structure, attributable to the enhanced electron-phonon coupling. Additional peaks become observable due to crystallographic disorder for the doped samples. The evolution of the E2g2 mode Fano parameter reveals that the disorder has a weak impact on electron-phonon coupling, which is also supported by the persistence of two-phonon structure in doped samples. As such, this research provides thorough insights into the lattice properties, the effects of crystallographic disorder on Raman spectra, and the interplay of this disorder with the electron-phonon coupling in 2H-TaSe2-xSx compounds.
Language
English
Source (journal)
Physical review materials / American Physical Society. - College Park, Md, 2017, currens
Publication
College Park, Md : American Physical Society , 2024
ISSN
2475-9953 [online]
DOI
10.1103/PHYSREVMATERIALS.8.024004
Volume/pages
8 :2 (2024) , p. 1-8
Article Reference
024004
ISI
001171649400004
Full text (Publisher's DOI)
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UAntwerpen
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Publications with a UAntwerp address
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Creation 13.03.2024
Last edited 02.04.2024
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