Polymorphic 2D materials allow structural and electronic phase engineering, which can be
used to realize energy-efficient, cost-effective, and scalable device applications. The phase …

Transition metal dichalcogenide (TMDC) films exhibit rich phases and superstructures,
which can be controlled by the growth conditions as well as post‐growth annealing …

To characterize in detail the charge density wave (CDW) transition of 1 T-VSe 2, its
electronic structure and lattice dynamics are comprehensively studied by means of x-ray …

Ultrafast optical switching of materials properties promises future technological applications,
enabled by fundamental insights about microscopic couplings and nonequilibrium …

Tantalum ditelluride (TaTe 2) belongs to the family of layered transition metal
dichalcogenides but exhibits a unique structural phase transition at around 170 K that …

Exploration of exotic transport behavior is of great interest and importance for revealing the
properties of the CDW phase of quasi-one-dimensional Ta2NiSe7. We report the anisotropic …

Polymorphism in two-dimensional (2D) materials presents a fertile ground for introducing
new functionalities and designing novel architectures. Here, using first-principles …

The trimerized state is an intriguing structure in the superlattice with three unit cells distorted
periodically. Here, we report on two kinds of featured phonon modes induced by the …

The time-and angle-resolved photoemission spectroscopy (trARPES) allows for direct
mapping of the electronic band structure and its dynamic response on femtosecond …

Charge density waves (CDW) in single-layer 1$ T $-MTe $ _2 $(M= Nb, Ta) recently raised
large attention because of the contrasting structural and physical behavior with the sulfide …