Completely hydrostatic pressure effect of anisotropic resistivity in the 1-D organic conductor (TMTTF)2SbF6

Miho Itoi; Yasuyuki Ishii; Shuho Takekoshi; Haruhisa Kitano; Kazuyuki Matsubayashi; Yoshiya Uwatoko; Toshikazu Nakamura

doi:10.1016/j.physc.2009.11.138

Completely hydrostatic pressure effect of anisotropic resistivity in the 1-D organic conductor (TMTTF)₂SbF₆

Miho Itoi, Yasuyuki Ishii, Shuho Takekoshi, Haruhisa Kitano, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Toshikazu Nakamura

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

4 Citations (Scopus)

Abstract

The anisotropic resistivity of (TMTTF)₂SbF₆ under hydrostatic pressure was investigated up to ∼0.3 GPa using a helium gas pressure control system. The resistivity along the a axis shows a metallic behavior above a crossover temperature T_ρ (∼220 K at ambient pressure) and an insulating behavior below T_ρ. On the other hand, the temperature dependence of ρb′ and ρc was found to show a kink at a charge ordered temperature TCO. Interestingly, T_ρ was increased with applying pressure while TCO was decreased with applying pressure. We discuss this unusual feature in terms of the pressure-temperature phase diagram in the (TMTCF)₂X system.

Original language	English
Pages (from-to)	S594-S595
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2009.11.138
Publication status	Published - 2010 Dec
Externally published	Yes

Keywords

Anisotropic resistivity
Helium gas pressure
Organic conductor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2009.11.138

Cite this

Completely hydrostatic pressure effect of anisotropic resistivity in the 1-D organic conductor (TMTTF)₂SbF₆. / Itoi, Miho; Ishii, Yasuyuki; Takekoshi, Shuho; Kitano, Haruhisa; Matsubayashi, Kazuyuki; Uwatoko, Yoshiya; Nakamura, Toshikazu.

In: Physica C: Superconductivity and its applications, Vol. 470, No. SUPPL.1, 12.2010, p. S594-S595.

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

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title = "Completely hydrostatic pressure effect of anisotropic resistivity in the 1-D organic conductor (TMTTF)2SbF6",

abstract = "The anisotropic resistivity of (TMTTF)2SbF6 under hydrostatic pressure was investigated up to ∼0.3 GPa using a helium gas pressure control system. The resistivity along the a axis shows a metallic behavior above a crossover temperature Tρ (∼220 K at ambient pressure) and an insulating behavior below Tρ. On the other hand, the temperature dependence of ρb′ and ρc was found to show a kink at a charge ordered temperature TCO. Interestingly, Tρ was increased with applying pressure while TCO was decreased with applying pressure. We discuss this unusual feature in terms of the pressure-temperature phase diagram in the (TMTCF)2X system.",

keywords = "Anisotropic resistivity, Helium gas pressure, Organic conductor",

author = "Miho Itoi and Yasuyuki Ishii and Shuho Takekoshi and Haruhisa Kitano and Kazuyuki Matsubayashi and Yoshiya Uwatoko and Toshikazu Nakamura",

note = "Funding Information: This work was partially supported by a High-Tech Research Center project for private universities with the matching fund subsidy from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of the Japanese Government, Grant-in-Aid For Scientific Research ( 21340092 , 21740263 and 21110517 ) of JSPS of Japan.",

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AU - Itoi, Miho

AU - Ishii, Yasuyuki

AU - Takekoshi, Shuho

AU - Kitano, Haruhisa

AU - Matsubayashi, Kazuyuki

AU - Uwatoko, Yoshiya

AU - Nakamura, Toshikazu

N1 - Funding Information: This work was partially supported by a High-Tech Research Center project for private universities with the matching fund subsidy from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of the Japanese Government, Grant-in-Aid For Scientific Research ( 21340092 , 21740263 and 21110517 ) of JSPS of Japan.

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AB - The anisotropic resistivity of (TMTTF)2SbF6 under hydrostatic pressure was investigated up to ∼0.3 GPa using a helium gas pressure control system. The resistivity along the a axis shows a metallic behavior above a crossover temperature Tρ (∼220 K at ambient pressure) and an insulating behavior below Tρ. On the other hand, the temperature dependence of ρb′ and ρc was found to show a kink at a charge ordered temperature TCO. Interestingly, Tρ was increased with applying pressure while TCO was decreased with applying pressure. We discuss this unusual feature in terms of the pressure-temperature phase diagram in the (TMTCF)2X system.

KW - Anisotropic resistivity

KW - Helium gas pressure

KW - Organic conductor

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