Figure 4
From: The influence of structural disorder and phonon on metal-to-insulator transition of VO 2
The temperature-dependent σ2s of the (a) V(0)-O, (b) the V(0)-V(1), and (c) the V(0)-V(2) pairs during (red dots) a heating and (blue squares) a cooling. (d) The temperature-dependent distance of the V(0)-V(2) pairs during a heating and a cooling. (e) and (f) The schematics of the \({{\boldsymbol{t}}}_{2{\boldsymbol{g}}}\)(\({{\boldsymbol{d}}}_{{\boldsymbol{xy}}}\), \({{\boldsymbol{d}}}_{{\boldsymbol{xz}}}\)) and d || of the V 3d orbitals of V atoms in the (110) plane of the R-phase VO2, respectively, and the light-blue arrows indicate the {111} direction of phonon propagation.
