TEMPERATURE-INDUCED NEUTRAL-IONIC TRANSITION IN DIMETHYLTETRATHIAFULVALENE-P-CHLORANIL

被引：50

作者：

AOKI, S

NAKAYAMA, T

MIURA, A

机构：

[1] Advanced Research Laboratory, Toshiba Research and Development Center

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.48.626

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new 1:1 mixed-stack organic charge-transfer crystal of 2,6-dimethyltetrathiafulvalene-p-chloranil (DMTTF-CA), which undergoes a temperature-induced neutral-ionic transition (TINIT), was reported. At a critical temperature of 65+/-5 K the molecular ionicity and the stack dimerization were found to change discontinuously. A most striking feature in the phase transition of DMTTF-CA was that a neutral-ionic coexisting phase did appear at lower temperatures, unlike the homogeneous ionic phase observed for the TINIT of tetrathiafulvalene-p-chloranil (TTF-CA). These transition characteristics were discussed by taking into account the structural differences between these two complexes composed of similar constituents.

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页码：626 / 629

页数：4

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