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

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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)367-377
Number of pages11
JournalSynthetic Metals
Volume16
Issue number3
DOIs
Publication statusPublished - 1986
Externally publishedYes

Fingerprint

Organic conductors
Dimerization
dimerization
conductors
X rays
Electric properties
electrical properties
Metal insulator transition
x rays
Superconducting transition temperature
Structural properties
Activation energy
transition temperature
insulators
activation energy
X ray diffraction
diffraction
metals
tetrathiafulvalene
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

X-ray evidence for structural changes in the organic conductors, α-(BEDT-TTF)2I3, α-(BEDT-TTF)2IBr2 and ß-(BEDT-TTF)2I3. / Nogami, Yoshio; Kagoshima, S.; Sugano, T.; Saito, G.

In: Synthetic Metals, Vol. 16, No. 3, 1986, p. 367-377.

Research output: Contribution to journalArticle

@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 = "Yoshio Nogami and S. Kagoshima and T. Sugano and G. Saito",
year = "1986",
doi = "10.1016/0379-6779(86)90173-6",
language = "English",
volume = "16",
pages = "367--377",
journal = "Synthetic Metals",
issn = "0379-6779",
publisher = "Elsevier BV",
number = "3",

}

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, Yoshio

AU - Kagoshima, S.

AU - Sugano, T.

AU - Saito, G.

PY - 1986

Y1 - 1986

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.

UR - http://www.scopus.com/inward/record.url?scp=0022904320&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022904320&partnerID=8YFLogxK

U2 - 10.1016/0379-6779(86)90173-6

DO - 10.1016/0379-6779(86)90173-6

M3 - Article

AN - SCOPUS:0022904320

VL - 16

SP - 367

EP - 377

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 3

ER -