Velichko, "On the problem of metal-insulator transitions
in vanadium oxides," ISRN Condensed Matter Physics, vol.
Chavez et al., "Strain and temperature dependence of the insulating phases of V[O.sub.2] near the metal-insulator transition," Physical Review B, vol.
Liang et al., "Intrinsic evolutions of optical functions, band gap, and higher-energy electronic transitions in V[O.sub.2] film near the metal-insulator transition region," Applied Physics Letters, vol.
A positive temperature coefficient of the resistivity at low temperature and critical behaviors of the temperature dependence of conductivity at the boundary of the metal-insulator transition (6), (7), (16-20) have been observed for the PPy doped with PF-6 anions, film prepared by electro-polymerization, which shows that PPy-PF6 films behave like disorder metal in the metallic regime while in the insulating regime is a Fermi glass (21).
The almost zero slopes with small fluctuations of W versus log T plots in the 78-230 K range indicate that the films grown in control, and EMITF solutions are on the metallic side of the metal-insulator transition with these two being closer to the critical regime (36).
The metal-insulator transition observed only for the PPy films obtain from conventional electrolyte above the transition regime, further, supports our findings that intrinsic differences between the physicochemical properties of ionic liquids and conventional liquid electrolytes ensue in films with altogether different properties.
Dhar, "The metal-insulator transition
and ferromagnetism in the electron-doped layered manganites [La.sub.2.3-x][Y.sub.x][Ca.sub.0.7][Mn.sub.2][O.sub.7] (x = 0, 0.3, 0.5)," Journal of Physics Condensed Matter, vol.
Ramanathan, "Electrical triggering of metal-insulator transition in nanoscale vanadium oxide junctions," Journal of Applied Physics, vol.
Ramanathan, "Metal-insulator transition and electrically driven memristive characteristics of SmNi[O.sub.3] thin films," Applied Physics Letters, vol.