# Systematic Variations in the Charge-Glass-Forming Ability of Geometrically Frustrated $\\theta$-(BEDT-TTF)$\_2X$ Organic Conductors

Source: [Systematic Variations in the Charge-Glass-Forming Ability of Geometrically Frustrated $\\theta$-(BEDT-TTF)$\_2X$ Organic Conductors](<https://www.sota2.com/research/paper/68fa2d8e1e209131ce85a1c1>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-27T03:24:05.390Z

Authors: T. Sato, F. Kagawa, K. Kobayashi, A. Ueda, H. Mori, K. Miyagawa, K. Kanoda, R. Kumai, Y. Murakami, Y. Tokura

Published: 2014-08-13T05:37:08.000Z

## Abstract

The critical cooling rate $R\_{\\rm c}$ above which charge ordering is kinetically avoided upon cooling, which results in charge-glass formation, was investigated for the geometrically frustrated system $\\theta$-(BEDT-TTF)$\_2X$. X-ray diffraction experiments revealed that $\\theta$-(BEDT-TTF)$\_2$TlCo(SCN)$\_4$ exhibits a horizontally charge-ordered state, and kinetic avoidance of this state requires rapid cooling of faster than 150 K/min. This value is markedly higher than that reported for two other isostructural $\\theta$-type compounds, thus demonstrating the lower charge-glass-forming ability of $X$ $=$ TlCo(SCN)$\_4$. In accounting for the systematic variations of $R\_{\\rm c}$ among the three $\\theta$-(BEDT-TTF)$\_2X$, we found that stronger charge frustration leads to superior charge-glass former. Our results suggest that charge frustration tends to slow the kinetics of charge ordering.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1408.2913>)

[PDF](<https://arxiv.org/pdf/1408.2913.pdf>)