Non-ergodic effects in the Coulomb glass: specific heat

Abstract

We present a numerical method for the investigation of non-ergodic effects in the Coulomb glass. For that, an almost complete set of low-energy many-particle states is obtained by a new algorithm. The dynamics of the sample is mapped to the graph formed by the relevant transitions between these states, that means by transitions with rates larger than the inverse of the duration of the measurement. The formation of isolated clusters in the graph indicates non-ergodicity. We analyze the connectivity of this graph in dependence on temperature, duration of measurement, degree of disorder, and dimensionality, studying how non-ergodicity is reflected in the specific heat.

Submited Phys. Rev. B

References in corpus (1)

• Optimization by thermal cycling

Cited by in corpus (7)

• Density of States and Critical Behavior of the Coulomb Glass
• Effect of Increasing Disorder on the Critical Behavior of a Coulomb System
• Slow Relaxation and Equilibrium Dynamics in a 2 D Coulomb Glass: Demonstration of Stretched Exponential Energy Correlations
• Effects of many-electron jumps in relaxation and conductivity of Coulomb glasses
• Numerical observation of a glassy phase in the three-dimensional Coulomb glass
• Quantum Coulomb gap in low dimensions
• Specific heat of the Coulomb glass