X-ray evidence for structural changes in the organic conductors, α-(BEDT-TTF)2I3, α-(BEDT-TTF)2IBr2 and ß-(BEDT-TTF)2I3

Y. Nogami; S. Kagoshima; T. Sugano; G. Saito

doi:10.1016/0379-6779(86)90173-6

X-ray evidence for structural changes in the organic conductors, α-(BEDT-TTF)₂I₃, α-(BEDT-TTF)₂IBr₂ and ß-(BEDT-TTF)₂I₃

Y. Nogami, S. Kagoshima, T. Sugano, G. Saito

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Interrelations are investigated between the electrical and structural properties of organic conductors, BEDT-TTF (bis(ethylenedithiolo)tetrathiafulvalene) trihalides. In α-)BEDT-TTF)₂I₃ evidence is obtained by X-ray diffraction for BEDT-TTF molecular dimerization at the metal-insulator transition temperature of 135 K. Another BEDT-TTF molecular dimerization is found in α-(BEDT-TTF)₂IBr₂, which has semiconducting properties and an activation energy that increases with decreasing temperature. These dimerizations are considered to be responsible for the changes in the electrical properties. Superconducting ß-(BEDT-TTF)₂I₃ is found to have a superstructure below 175 K, above which short-range fluctuations are observed up to about 200 K.

Original language	English
Pages (from-to)	367-377
Number of pages	11
Journal	Synthetic Metals
Volume	16
Issue number	3
DOIs	https://doi.org/10.1016/0379-6779(86)90173-6
Publication status	Published - Dec 1986
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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@article{ffe98f75e0cc401994435999b51dda0e,

title = "X-ray evidence for structural changes in the organic conductors, α-(BEDT-TTF)2I3, α-(BEDT-TTF)2IBr2 and {\ss}-(BEDT-TTF)2I3",

abstract = "Interrelations are investigated between the electrical and structural properties of organic conductors, BEDT-TTF (bis(ethylenedithiolo)tetrathiafulvalene) trihalides. In α-)BEDT-TTF)2I3 evidence is obtained by X-ray diffraction for BEDT-TTF molecular dimerization at the metal-insulator transition temperature of 135 K. Another BEDT-TTF molecular dimerization is found in α-(BEDT-TTF)2IBr2, which has semiconducting properties and an activation energy that increases with decreasing temperature. These dimerizations are considered to be responsible for the changes in the electrical properties. Superconducting {\ss}-(BEDT-TTF)2I3 is found to have a superstructure below 175 K, above which short-range fluctuations are observed up to about 200 K.",

author = "Y. Nogami and S. Kagoshima and T. Sugano and G. Saito",

year = "1986",

month = dec,

doi = "10.1016/0379-6779(86)90173-6",

language = "English",

volume = "16",

pages = "367--377",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

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TY - JOUR

T1 - X-ray evidence for structural changes in the organic conductors, α-(BEDT-TTF)2I3, α-(BEDT-TTF)2IBr2 and ß-(BEDT-TTF)2I3

AU - Nogami, Y.

AU - Kagoshima, S.

AU - Sugano, T.

AU - Saito, G.

PY - 1986/12

Y1 - 1986/12

N2 - Interrelations are investigated between the electrical and structural properties of organic conductors, BEDT-TTF (bis(ethylenedithiolo)tetrathiafulvalene) trihalides. In α-)BEDT-TTF)2I3 evidence is obtained by X-ray diffraction for BEDT-TTF molecular dimerization at the metal-insulator transition temperature of 135 K. Another BEDT-TTF molecular dimerization is found in α-(BEDT-TTF)2IBr2, which has semiconducting properties and an activation energy that increases with decreasing temperature. These dimerizations are considered to be responsible for the changes in the electrical properties. Superconducting ß-(BEDT-TTF)2I3 is found to have a superstructure below 175 K, above which short-range fluctuations are observed up to about 200 K.

AB - Interrelations are investigated between the electrical and structural properties of organic conductors, BEDT-TTF (bis(ethylenedithiolo)tetrathiafulvalene) trihalides. In α-)BEDT-TTF)2I3 evidence is obtained by X-ray diffraction for BEDT-TTF molecular dimerization at the metal-insulator transition temperature of 135 K. Another BEDT-TTF molecular dimerization is found in α-(BEDT-TTF)2IBr2, which has semiconducting properties and an activation energy that increases with decreasing temperature. These dimerizations are considered to be responsible for the changes in the electrical properties. Superconducting ß-(BEDT-TTF)2I3 is found to have a superstructure below 175 K, above which short-range fluctuations are observed up to about 200 K.

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