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The glass transition and the Coulomb gap in electron glasses

M. Mueller·L. B. Ioffe
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Abstract

We establish the connection between the presence of a glass phase and the appearance of a Coulomb gap in disordered materials with strongly interacting electrons. Treating multiparticle correlations in a systematic way, we show that in the case of strong disorder a continuous glass transition takes place whose Landau expansion is identical to that of the Sherrington-Kirkpatrick spin glass. We show that the marginal stability of the glass phase controls the physics of these systems: it results in slow dynamics and leads to the formation of a Coulomb gap.

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M. Mueller, L. B. Ioffe. 2004-06-14. The glass transition and the Coulomb gap in electron glasses. https://doi.org/10.1103/physrevlett.93.256403

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