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 ?
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).
In the mid-'70s, he formulated an explanation of the superfluid phases of one of the isotopes of helium and many properties of these exotic states of matter, as well as a theoretical explanation of the nature of the metal-insulator transition known as the Mott transition.
Second, eigenvalue statistics will be used to detect the basic dichotomy of disordered quantum systems, the Anderson metal-insulator transition.
We find that this model undergoes an Anderson metal-insulator transition at a critical value of disorder strength", Zare' explained.
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