On the Problem of Metal-Insulator Transitions in Vanadium Oxides
Figure 4
Schematic temperature dependences of the Debye screening length and localization radius. If account is taken of the dependence of on via the divergence of near the transition point (curve ), the transition does occur (vertical dashed line). For more detailed discussion of the dependence on see [7]. A region of phase coexistence (termed as an “intermediate state” [12] or a “strongly correlated metal” [13] in case of VO2) with a divergent effective mass is also shown.
