Few-layer tantalum diselenides (TaSe2) are typical metallic TMDs exhibiting rich CDW phase transitions. However, a description of the structural, electronic and vibrational properties for different crystal phases and stacking configurations, essential for interpretation of experiments, is lacking. We ...
Although we analyze the full RPES range, we restrict the quantitative Raman fraction and charge transfer time analysis to the 227.5–228.5 eV photon energy range, just above the Fermi level. Here, the l- and d-channels are ideally separable and address the physically relevant density of ...
In the I-CDW phase, the loss of translational symmetry coincides with a strong suppression and broadening of the Raman peaks. The observed change in the C-CDW transition temperature is consistent with total energy calculations of bulk and monolayer 1T-TaSe2....
摘要: The Raman spectrum of 1T-TaSe2 has been studied for 22, suggests that the observation of multiple CDW-induced lines at energies below 100 cm-1 is partly due to the existence of secondary order parameters in the CDW state.DOI: 10.1103/PHYSREVB.16.4239 年份: 1977 ...
Here, we report the strain as a possible new tuning parameter to induce Mott gap collapse in 1T-TaS[Math Processing Error]2. In a strain-rich area, we find a mosaic state with distinct electronic density of states within different domains. In a corrugated surface, we further observe and ...
The occurrence of charge-density waves in three selected layered transition-metal dichalcogenides-1T-TaS(2), 2H-TaSe(2) and 1T-TiSe(2)-is discussed from an... Rossnagel,K - 《Journal of Physics Condensed Matter An Institute of Physics Journal》 ...
1T‐TaSe22D materialcharge density wavechemical vapor depositionRaman spectraBulk 1T㏕aSe2 as a chargeヾensity﹚ave (CDW) conductor is of special interest for CDW‐based nanodevice applications because of its high CDW transition temperature. Reduced dimensionality of the strongly correlated material is...
OTl2). Among the materials chosen 7 of them have been reported to present both a 1T and a 2H geometry: CrSe2, GeI2, MoS2, NbS2, NbSe2, TaS2, and TaSe2. Most of the MLs investigated here are also part of C2DB,15with the exceptions being OTl2, STl2, YbI2, and 2H-GeI2. Not...