Charge ordering in α-(BEDT-TTF) 2I 3 by synchrotron X-ray diffraction

Tora Kakiuchi; Yusuke Wakabayashi; Hiroshi Sawa; Toshihiro Takahashi; Toshikazu Nakamura

doi:10.1143/JPSJ.76.113702

Charge ordering in α-(BEDT-TTF) ₂I ₃ by synchrotron X-ray diffraction

Tora Kakiuchi, Yusuke Wakabayashi, Hiroshi Sawa, Toshihiro Takahashi, Toshikazu Nakamura

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

151 Citations (Scopus)

Abstract

The spatial charge arrangement of a typical quasi-two-dimensional organic conductor α-(BEDT-TTF) ₂I ₃ is revealed by single crystal structure analysis using synchrotron radiation. The results show that the horizontal-stripe-type structure, which was suggested by the mean field theory, is established. We also find the charge disproportionation above the metal-insulator transition temperature and a significant change in the transfer integrals caused by the phase transition. Our result elucidates the insulating phase of this material as the 2k _F charge density localization.

Original language	English
Article number	113702
Journal	journal of the physical society of japan
Volume	76
Issue number	11
DOIs	https://doi.org/10.1143/JPSJ.76.113702
Publication status	Published - 2007 Nov
Externally published	Yes

Keywords

Charge ordering
Crystal structure analysis
Quasi-two-dimensional organic conductor
Synchrotron radiation
α-(BEDT-TTF) I

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.76.113702

Cite this

@article{818200381bc34515b77bfbea8f3aac1f,

title = "Charge ordering in α-(BEDT-TTF) 2I 3 by synchrotron X-ray diffraction",

abstract = "The spatial charge arrangement of a typical quasi-two-dimensional organic conductor α-(BEDT-TTF) 2I 3 is revealed by single crystal structure analysis using synchrotron radiation. The results show that the horizontal-stripe-type structure, which was suggested by the mean field theory, is established. We also find the charge disproportionation above the metal-insulator transition temperature and a significant change in the transfer integrals caused by the phase transition. Our result elucidates the insulating phase of this material as the 2k F charge density localization.",

keywords = "Charge ordering, Crystal structure analysis, Quasi-two-dimensional organic conductor, Synchrotron radiation, α-(BEDT-TTF) I",

author = "Tora Kakiuchi and Yusuke Wakabayashi and Hiroshi Sawa and Toshihiro Takahashi and Toshikazu Nakamura",

year = "2007",

month = nov,

doi = "10.1143/JPSJ.76.113702",

language = "English",

volume = "76",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "11",

}

TY - JOUR

T1 - Charge ordering in α-(BEDT-TTF) 2I 3 by synchrotron X-ray diffraction

AU - Kakiuchi, Tora

AU - Wakabayashi, Yusuke

AU - Sawa, Hiroshi

AU - Takahashi, Toshihiro

AU - Nakamura, Toshikazu

PY - 2007/11

Y1 - 2007/11

N2 - The spatial charge arrangement of a typical quasi-two-dimensional organic conductor α-(BEDT-TTF) 2I 3 is revealed by single crystal structure analysis using synchrotron radiation. The results show that the horizontal-stripe-type structure, which was suggested by the mean field theory, is established. We also find the charge disproportionation above the metal-insulator transition temperature and a significant change in the transfer integrals caused by the phase transition. Our result elucidates the insulating phase of this material as the 2k F charge density localization.

AB - The spatial charge arrangement of a typical quasi-two-dimensional organic conductor α-(BEDT-TTF) 2I 3 is revealed by single crystal structure analysis using synchrotron radiation. The results show that the horizontal-stripe-type structure, which was suggested by the mean field theory, is established. We also find the charge disproportionation above the metal-insulator transition temperature and a significant change in the transfer integrals caused by the phase transition. Our result elucidates the insulating phase of this material as the 2k F charge density localization.

KW - Charge ordering

KW - Crystal structure analysis

KW - Quasi-two-dimensional organic conductor

KW - Synchrotron radiation

KW - α-(BEDT-TTF) I

UR - http://www.scopus.com/inward/record.url?scp=36148964439&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36148964439&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.76.113702

DO - 10.1143/JPSJ.76.113702

M3 - Article

AN - SCOPUS:36148964439

SN - 0031-9015

VL - 76

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 11

M1 - 113702

ER -