Journal ArticleDOI
Conduction in glasses containing transition metal ions
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In this article, a discussion of conduction in glasses containing transition metal ions is presented, and the Miller-Abrahams term and polaron hopping term tend to zero, giving a decreasing slope of the ln p versus 1/T curve.Abstract:
In a discussion of conduction in glasses containing transition metal ions, the following points are stressed: 1. (a) The process is similar to “impurity conduction” in doped and compensated semi-conductors. 2. (b) There should be two terms in the activation energy, the Miller-Abrahams term and a polaron hopping term. 3. (c) Both terms should tend to zero, giving a decreasing slope of the ln p versus 1/T curve, as T → 0. 4. (d) The Heikes-Ure formula for the thermopower is discussed and a tentative explanation given of the difference between vanadium- and iron-containing glasses.read more
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References
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Absence of Diffusion in Certain Random Lattices
TL;DR: In this article, a simple model for spin diffusion or conduction in the "impurity band" is presented, which involves transport in a lattice which is in some sense random, and in them diffusion is expected to take place via quantum jumps between localized sites.
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Studies of polaron motion: Part II. The “small” polaron
TL;DR: In this article, the authors considered the case in which the electronic-overlap term of the total Hamiltonian is a small perturbation, and showed that the probability of off-diagonal transitions goes up exponentially with increasing temperature.
Journal ArticleDOI
Impurity Conduction at Low Concentrations
A. J. Miller,Elihu Abrahams +1 more
TL;DR: In this paper, the conductivity of an n-type semiconductor has been calculated in the region of low-temperature $T$ and low impurity concentration ${n}_{D}$.
Journal ArticleDOI
Conduction in polar crystals. I. Electrolytic conduction in solid salts
N. F. Mott,M. J. Littleton +1 more
TL;DR: Etude theorique de la conductivite des solides (NaCl, KCl, RbCl, LiF, NaF, NN, NaBr, NaI, KI, I, KB, KK, KBr, RBCl, NBr, NB, NCl, NaB, NaC, NC, NaD, NaE, NE, NaG, NG, NaX, NX, NaV, NaZ, NaY, NaO, NaW, NaN, N