Fig. 3: Analysis of the E″ and \({{\rm{A}}}_{2}^{^{\prime\prime} }\)modes.
From: Sub-picosecond photo-induced displacive phase transition in two-dimensional MoTe2
a Phonon frequency of the E″ and \({{\rm{A}}}_{2}^{^{\prime\prime} }\) modes as a function of laser excitation energy. b Energy surface in the plane spanned by the two soft modes. Each contour line represents an energy increase of 0.02 eV.
