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- W1974814789 abstract "A reexamination is made of previous resistivity data of the Ti${mathrm{O}}_{0.80ensuremath{-}1.23}$ metallic oxide system, in which very large positive and negative temperature coefficients of resistivity $ensuremath{alpha}$ are observed. Ti${mathrm{O}}_{0.80ensuremath{-}1.23}$ samples contain a large number of stoichiometric vacancies which can be thermally ordered and disordered, drastically changing the residual resistivity, without seriously affecting the superconducting ${T}_{c}$. Fitting the results to the two-level model shows that any resistivity due to the two-level system must operate in parallel with the normal electron-phonon interactions. A phenomenological formula, based on the ideas of incipient localization in very-high-resistivity materials, is introduced. This formula fits all the data for the Ti${mathrm{O}}_{0.80ensuremath{-}1.23}$ system in a semiquantitative way. It also predicts that a zero $ensuremath{alpha}$ (the Mooij criterion) occurs when the elastic mean free path and the weak localization coherence length are approximately equal." @default.
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- W1974814789 date "1982-02-15" @default.
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- W1974814789 title "New models for the positive and negative temperature coefficients of resistivity for Ti<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>O</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn><mml:mo>.</mml:mo><mml:mn>8</mml:mn><mml:mn>0</mml:mn><mml:mo>−</mml:mo><mml:mn>1</mml:mn><mml:mo>.</mml:mo><mml:mn>2</mml:mn><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>metallic oxides" @default.
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- W1974814789 doi "https://doi.org/10.1103/physrevb.25.2285" @default.
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