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.

arXiv comment5 pages, 5 figures

References in corpus (9)

• Complexity in Strongly Correlated Electronic Systems
• Bond orientational ordering in liquids: Towards a unified description of water-like anomalies, liquid-liquid transition, glass transition, and crystallization
• Charge Ordering in Organic ET Compounds
• Glassy Aging Dynamics
• Stripe glasses: self generated randomness in a uniformly frustrated system
• Cooperativity and the freezing of molecular motion at the glass transition
• Evidence for structural and electronic instabilities at intermediate temperatures in $\kappa$-(BEDT-TTF)${}_2$X for X=Cu[N(CN)${}_2$]Cl, Cu[N(CN)${}_2$]Br and Cu(NCS)${}_2$: Implications for the phase diagram of these quasi-2D organic superconductors
• Charge-cluster glass in an organic conductor
• Quantum Melting of Charge Order due to Frustration in Two-Dimensional Quarter-Filled Systems

Cited by in corpus (13)

• Glassy dynamics in geometrically frustrated Coulomb liquids without disorder
• Molecular Quantum Materials: Electronic Phases and Charge Dynamics in Two-Dimensional Organic Solids
• Quenching of charge and spin degrees of freedom in condensed matter
• Crystallization and vitrification of electrons in a glass-forming charge liquid
• 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
• Involvement of structural dynamics in the charge-glass formation in molecular metals
• Suppressed Density of States in Self-Generated Coulomb Glasses
• Finite Temperature Properties of Geometrically Charge Frustrated Systems
• Charge glass in an extended dimer Hubbard model
• Combined experimental and theoretical studies on glasslike transitions in the frustrated molecular conductors $\theta$-(BEDT-TTF)${}_{2}M{M}^{\prime }$(SCN)${}_4$
• Comparison of the charge-crystal and charge-glass state in geometrically frustrated organic conductors studied by fluctuation spectroscopy