metal-insulator transition


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metal-insulator transition

[′med·əl ¦in·sə‚lād·ər tran′zish·ən]
(solid-state physics)
The change of certain low-dimensional conductors from metals to insulators as the temperature is lowered through a certain value, due to the lattice distortion and band gap accompanying the onset of a charge-density wave.
References in periodicals archive ?
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.
Second, eigenvalue statistics will be used to detect the basic dichotomy of disordered quantum systems, the Anderson metal-insulator transition. Third, describe the properties of the strongly correlated eigenvalues viewed as a point process.
The predictions include: (i) materials whose atoms have no magnetism when in isolation but develop magnetism through interactions with neighbouring atoms, (ii) anisotropic, bond-directional magnetic couplings resulting in novel propagating magnetic modes, (iii) quantum-mechanically entangled spin and orbital liquid states with exotic emergent quasiparticle excitations, (iv) metal-insulator transitions driven by spin-orbit enhanced magnetic correlations, and (v) unconventional superconductivity of doped electrons mediated by magnetic fluctuations.
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