Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2002-11-29
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1103/PhysRevB.68.085306
Disordered granular systems, at temperatures where charging effects are important, are studied, by means of an effective medium approximation. The intragrain charging energy leads to insulating behavior at low temperatures, with a well defined Coulomb gap. Non equilibrium effects can give rise to a zero temperature transition between a metallic, gapless phase, and an insulating phase.
Arovas Daniel P.
Guinea Francisco
Herrero C.
Jose San P.
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