Two-dimensional (2D) transition metal dichalcogenide (TMD) nanosheets exhibit
remarkable electronic and optical properties. The 2D features, sizable bandgaps and recent …

The quantum confinement in atomic scale and the presence of interlayer coupling in
multilayer make the electronic and optical properties of 2D materials (2DMs) be dependent …

Platinum disulfide (PtS2), a new member of the group-10 transition-metal dichalcogenides,
is studied experimentally and theoretically. The indirect bandgap of PtS2 can be drastically …

Raman spectra of MoS2, WS2, and their heterostructures are studied by density functional
theory. We quantitatively reproduce existing experimental data and present evidence that …

We present successful synthesis of large area atomically thin MoSe2 films by selenization of
MoO3 in a vapor transport chemical vapor deposition (CVD) system. The homogeneous thin …

Two-dimensional layered crystals could show phonon properties that are markedly distinct
from those of their bulk counterparts, because of the loss of periodicities along the c-axis …

Molybdenum disulfide, MoS 2, has recently gained considerable attention as a layered
material where neighboring layers are only weakly interacting and can easily slide against …

We report the observation and interpretation of new Raman peaks in few-layer tungsten
diselenide (WSe 2), induced by the reduction of symmetry going from three-dimensional …

Raman spectroscopy is a powerful technique to probe structural and doping behaviors of
two-dimensional (2D) materials. In MoS2, the always coexisting in-plane (E2g1) and out-of …

Phonons with chirality determine the optical helicity of inelastic light scattering processes
due to their nonzero angular momentum. Here it is shown that 2D magnetic CrBr3 hosts …