The glass transition and the Coulomb gap in electron glasses

Details The glass transition and the Coulomb gap in electron glasses The glass transition and the Coulomb gap in electron glasses

2004-06-14

arxiv.org/abs/cond-mat/0406324v1

Phys. Rev. Lett. 93, 256403 (2004)

Physics

Condensed Matter

Disordered Systems and Neural Networks

Scientific paper

10.1103/PhysRevLett.93.256403

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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