Vinca Institute of Nuclear Sciences [Contract No. 451-03-66/2024-03/200017]

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Vinca Institute of Nuclear Sciences [Contract No. 451-03-66/2024-03/200017]

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Competition of disorder and electron-phonon coupling in 2 H − TaSe 2 − x S x ( 0 ≤ x ≤ 2 ) as evidenced by Raman spectroscopy

Blagojević, Jovan; Đurđić-Mijin, Sanja; Bekaert, J.; Opačić, Marko; Liu, Y.; Milošević, Milorad V.; Petrović, Čedomir; Popović, Zoran V.; Lazarević, Nenad

(2024)

TY  - JOUR
AU  - Blagojević, Jovan
AU  - Đurđić-Mijin, Sanja
AU  - Bekaert, J.
AU  - Opačić, Marko
AU  - Liu, Y.
AU  - Milošević, Milorad V.
AU  - Petrović, Čedomir
AU  - Popović, Zoran V.
AU  - Lazarević, Nenad
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13344
AB  - The vibrational properties of 2⁢𝐻−TaSe2−𝑥⁢S𝑥 (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 𝐸2 2⁢𝑔 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 2⁢𝐻−TaSe2−𝑥⁢S𝑥 compounds.
T2  - Physical Review Materials
T1  - Competition of disorder and electron-phonon coupling in                                                                  2                        H                        −                                                  TaSe                                                      2                            −                            x                                                                                                    S                          x                                                                                                                  (                        0                        ≤                        x                        ≤                        2                        )                                                              as evidenced by Raman spectroscopy
VL  - 8
IS  - 2
SP  - 024004
DO  - 10.1103/PhysRevMaterials.8.024004
ER  - 
@article{
author = "Blagojević, Jovan and Đurđić-Mijin, Sanja and Bekaert, J. and Opačić, Marko and Liu, Y. and Milošević, Milorad V. and Petrović, Čedomir and Popović, Zoran V. and Lazarević, Nenad",
year = "2024",
abstract = "The vibrational properties of 2⁢𝐻−TaSe2−𝑥⁢S𝑥 (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 𝐸2 2⁢𝑔 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 2⁢𝐻−TaSe2−𝑥⁢S𝑥 compounds.",
journal = "Physical Review Materials",
title = "Competition of disorder and electron-phonon coupling in                                                                  2                        H                        −                                                  TaSe                                                      2                            −                            x                                                                                                    S                          x                                                                                                                  (                        0                        ≤                        x                        ≤                        2                        )                                                              as evidenced by Raman spectroscopy",
volume = "8",
number = "2",
pages = "024004",
doi = "10.1103/PhysRevMaterials.8.024004"
}
Blagojević, J., Đurđić-Mijin, S., Bekaert, J., Opačić, M., Liu, Y., Milošević, M. V., Petrović, Č., Popović, Z. V.,& Lazarević, N.. (2024). Competition of disorder and electron-phonon coupling in                                                                  2                        H                        −                                                  TaSe                                                      2                            −                            x                                                                                                    S                          x                                                                                                                  (                        0                        ≤                        x                        ≤                        2                        )                                                              as evidenced by Raman spectroscopy. in Physical Review Materials, 8(2), 024004.
https://doi.org/10.1103/PhysRevMaterials.8.024004
Blagojević J, Đurđić-Mijin S, Bekaert J, Opačić M, Liu Y, Milošević MV, Petrović Č, Popović ZV, Lazarević N. Competition of disorder and electron-phonon coupling in                                                                  2                        H                        −                                                  TaSe                                                      2                            −                            x                                                                                                    S                          x                                                                                                                  (                        0                        ≤                        x                        ≤                        2                        )                                                              as evidenced by Raman spectroscopy. in Physical Review Materials. 2024;8(2):024004.
doi:10.1103/PhysRevMaterials.8.024004 .
Blagojević, Jovan, Đurđić-Mijin, Sanja, Bekaert, J., Opačić, Marko, Liu, Y., Milošević, Milorad V., Petrović, Čedomir, Popović, Zoran V., Lazarević, Nenad, "Competition of disorder and electron-phonon coupling in                                                                  2                        H                        −                                                  TaSe                                                      2                            −                            x                                                                                                    S                          x                                                                                                                  (                        0                        ≤                        x                        ≤                        2                        )                                                              as evidenced by Raman spectroscopy" in Physical Review Materials, 8, no. 2 (2024):024004,
https://doi.org/10.1103/PhysRevMaterials.8.024004 . .