Fig. 4: Microscopic mechanism for PIPT.
From: Sub-picosecond photo-induced displacive phase transition in two-dimensional MoTe2
a 3D and b top view (Mo layer) of the electron localization function of 2H MoTe2 at different excitation energies. The electron localization function from 0 to 1 is shown by colors from navy to red. The isosurface for the electron localization function in a is 0.2. Static lattice DOS (gray) compared with the DOS along the eigenvector of the (c) E″ (green) and (d) \({{\rm{A}}}_{2}^{^{\prime\prime} }\) (pink) phonon modes, with the displacement amplitudes corresponding to the potential minimum at 2.34 eV.
