EXTENSION OF EQUILIBRIUM CONCEPTS TO NON-EQUILIBRIUM IN GLASSY CHALCOGENIDES: NUMERICAL SIMULATIONS IN THE COULOMB GLASS MODEL

作者：Caravaca M^*; Gimeno F; Meseguer Valdenebro J L

来源：Chalcogenide Letters, 2015, 12(5): 227-236.

• Glassy chalcogenides
• Amorphous semiconductors
• Coulomb glasses
• Numerical simulations
• density of states
• Fluctuation-dissipation theorem

In this paper, we investigate the generalization of some equilibrium properties of the Coulomb glass model to characterize the thermal behavior of glassy chalcogenides out of equilibrium. Concretely, we focus on the minimum of the one-particle density of states and the fluctuation-dissipation theorem. The former can be employed as a good thermometer out of equilibrium while the latter reveals the existence of more than one temperature in glassy chalcogenides. The approaches applied in this work are suitable to explore the nature as well as the thermal properties of other glassy systems, such as spin glasses.

• 出版日期2015-5