Four-dimensional ultrafast transmission electron microscopy (4D-UTEM)measurements reveal a rich variety of structural dynamic phenomena at a phasetransition in the charge-density-wave (CDW) 1T-TaSe2. Through thephotoexcitation, remarkable changes on both the CDW intensity and orientationare clearly ...
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....
The scanning tunnelling microscopy (STM) images of charge density waves (CDW) in transition-metal dichalcogenide 1T-TaSe2 are theoretically simulated through a realistic electronic structure calculation. The simulation of STM/STS spectrum is executed by means of surface local-density of states (LDOS)...
Four-dimensional ultrafast transmission electron microscopy (4D-UTEM)measurements reveal a rich variety of structural dynamic phenomena at a phasetransition in the charge-density-wave (CDW) 1T-TaSe2. Through thephotoexcitation, remarkable changes on both the CDW intensity and orientationare clearly observ...
Theory of STM image of CDW in 1T-TaSe 2 The scanning tunnelling microscopy (STM) images of charge density waves (CDW) in transition-metal dichalcogenide 1T-TaSe are theoretically simulated throug... A Kikuchi - 《Surface Science》 被引量: 3发表: 1998年 Band structures of the layer compounds...
Doping-induced disordered distribution of Se/Te suppresses CDWs in 1TTaSe2. A domelike superconducting phase with the maximum Tconset of 2.5 K was observed near CDWs. The superconducting volume is very small inside the CDW phase and becomes very large instantly when the CDW phase is fully ...
with a fixed cell employed 9 layers and the outer 2 layers on each side have been relaxed. The surface Brillouin zone was sampled with 5 × 5 k-points and 30 Å of vacuum were added. We used a hex- agonal super respectively. cell to simulate the Ts = c CDW stacking15...
However, the growth of atomically thin 1T㏕aSe2 crystals remains elusive, thus hampering studies of dimensionality effects on the CDW of the material. Herein, chemical vapor deposition (CVD) of atomically thin TaSe2 crystals is reported with controlled 1T phase. Scanning transmission electron ...
Bulk 1T-TaSe2 exhibits unusually high charge density wave (CDW) transition temperatures of 600 K and 473 K below which the material exists in the incommensurate (I-CDW) and the commensurate (C-CDW) charge-density-wave phases, respectivel... R Samnakay,D Wickramaratne,TR Pope,... - 《...
Interplay of charge density waves, disorder, and superconductivity in 2H-TaSe2 elucidated by NMR. New J. Phys. 24, 043008 (2022). Article ADS Google Scholar Svetin, D. et al. Transitions between photoinduced macroscopic quantum states in 1T-TaS2 controlled by substrate strain. Appl. Phys....