Emergence of non-equilibrium charge dynamics in a charge-cluster glass

Abstract

Non-equilibrium charge dynamics, such as cooling-rate-dependent charge vitrification and physical aging, have been demonstrated for a charge-cluster glass in $\theta$-(BEDT-TTF)${}_2$CsZn(SCN)${}_4$ using electron transport measurements. The temperature evolution of the relaxation time obeys the Arrhenius law, indicating that the glass-forming charge liquid can be classified as a "`strong" liquid in the scheme of canonical structural-glass formers. X-ray diffuse scattering further reveals that the spatial growth of charge clusters in the charge liquid is frozen below the glass transition temperature, indicating an intrinsic relationship between dynamics and structure in the charge-cluster glass.

5 pages, 5 figures

References in corpus (2)

• Glassy Aging Dynamics
• Quantum Melting of Charge Order due to Frustration in Two-Dimensional Quarter-Filled Systems

Cited by in corpus (5)

• Molecular Quantum Materials: Electronic Phases and Charge Dynamics in Two-Dimensional Organic Solids
• Phase-change memory function of correlated electrons in organic conductors
• Systematic Variations in the Charge-Glass-Forming Ability of Geometrically Frustrated $\theta$-(BEDT-TTF)${}_{2}X$ Organic Conductors
• Anomalous 2D-confined electronic transport in layered organic charge-glass systems
• Comparison of the charge-crystal and charge-glass state in geometrically frustrated organic conductors studied by fluctuation spectroscopy