Uniaxial strain effect on the θ-phase organic conductor with a large dihedral angle, θ-(TMET-TTP)4PF6

Tomoaki Takeuchi; Hirotada Hoshino; Ryusuke Kondo; Seiichi Kagoshima; Masaya Enomoto; Tadashi Kawamoto; Takehiko Mori

doi:10.1143/JPSJ.72.1152

Uniaxial strain effect on the θ-phase organic conductor with a large dihedral angle, θ-(TMET-TTP)₄PF₆

Tomoaki Takeuchi, Hirotada Hoshino, Ryusuke Kondo, Seiichi Kagoshima, Masaya Enomoto, Tadashi Kawamoto, Takehiko Mori

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

1 Citation (Scopus)

Abstract

For the organic conductor θ-(TMET-TTP)₄PF₆ (TMET-TTP: 2-[4,5-bis(methylthio)-1,3-dithiol-2-ylidene]-5-(4,5-ethylenedithio- 1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene), electrical resistance has been measured under the uniaxial strain applied along the a-, b-, and c-axes as well as under hydrostatic pressure. Contrary to the prediction of the universal phase diagram in which the c-axis strain will raise the metal-insulator transition temperature by expanding the dihedral angle, the insulating state is suppressed under the strain in all directions. The results are interpreted in terms of the increasing intra-stack transfer integral in the large dihedral angle region.

Original language	English
Pages (from-to)	1152-1154
Number of pages	3
Journal	journal of the physical society of japan
Volume	72
Issue number	5
DOIs	https://doi.org/10.1143/JPSJ.72.1152
Publication status	Published - May 1 2003
Externally published	Yes

Keywords

Dihedral angle
Organic conductor
Uniaxial strain
Universal phase diagram

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.72.1152

Cite this

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title = "Uniaxial strain effect on the θ-phase organic conductor with a large dihedral angle, θ-(TMET-TTP)4PF6",

abstract = "For the organic conductor θ-(TMET-TTP)4PF6 (TMET-TTP: 2-[4,5-bis(methylthio)-1,3-dithiol-2-ylidene]-5-(4,5-ethylenedithio- 1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene), electrical resistance has been measured under the uniaxial strain applied along the a-, b-, and c-axes as well as under hydrostatic pressure. Contrary to the prediction of the universal phase diagram in which the c-axis strain will raise the metal-insulator transition temperature by expanding the dihedral angle, the insulating state is suppressed under the strain in all directions. The results are interpreted in terms of the increasing intra-stack transfer integral in the large dihedral angle region.",

keywords = "Dihedral angle, Organic conductor, Uniaxial strain, Universal phase diagram",

author = "Tomoaki Takeuchi and Hirotada Hoshino and Ryusuke Kondo and Seiichi Kagoshima and Masaya Enomoto and Tadashi Kawamoto and Takehiko Mori",

year = "2003",

month = may,

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doi = "10.1143/JPSJ.72.1152",

language = "English",

volume = "72",

pages = "1152--1154",

journal = "journal of the physical society of japan",

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publisher = "Physical Society of Japan",

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T1 - Uniaxial strain effect on the θ-phase organic conductor with a large dihedral angle, θ-(TMET-TTP)4PF6

AU - Takeuchi, Tomoaki

AU - Hoshino, Hirotada

AU - Kondo, Ryusuke

AU - Kagoshima, Seiichi

AU - Enomoto, Masaya

AU - Kawamoto, Tadashi

AU - Mori, Takehiko

PY - 2003/5/1

Y1 - 2003/5/1

N2 - For the organic conductor θ-(TMET-TTP)4PF6 (TMET-TTP: 2-[4,5-bis(methylthio)-1,3-dithiol-2-ylidene]-5-(4,5-ethylenedithio- 1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene), electrical resistance has been measured under the uniaxial strain applied along the a-, b-, and c-axes as well as under hydrostatic pressure. Contrary to the prediction of the universal phase diagram in which the c-axis strain will raise the metal-insulator transition temperature by expanding the dihedral angle, the insulating state is suppressed under the strain in all directions. The results are interpreted in terms of the increasing intra-stack transfer integral in the large dihedral angle region.

AB - For the organic conductor θ-(TMET-TTP)4PF6 (TMET-TTP: 2-[4,5-bis(methylthio)-1,3-dithiol-2-ylidene]-5-(4,5-ethylenedithio- 1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene), electrical resistance has been measured under the uniaxial strain applied along the a-, b-, and c-axes as well as under hydrostatic pressure. Contrary to the prediction of the universal phase diagram in which the c-axis strain will raise the metal-insulator transition temperature by expanding the dihedral angle, the insulating state is suppressed under the strain in all directions. The results are interpreted in terms of the increasing intra-stack transfer integral in the large dihedral angle region.

KW - Dihedral angle

KW - Organic conductor

KW - Uniaxial strain

KW - Universal phase diagram

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