Magnetic field dependence of incommensurate SDW transition in (TMTTF)2Br

A. Ishikawa; N. Matsunaga; K. Nomura; T. Nakamura; T. Takahashi; G. Saito

doi:10.1016/S0379-6779(02)00266-7

Magnetic field dependence of incommensurate SDW transition in (TMTTF)₂Br

A. Ishikawa, N. Matsunaga, K. Nomura, T. Nakamura, T. Takahashi, G. Saito

SCI - Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

Resistivity measurements were performed on (TMTTF)₂Br under pressure. Magnetic field was applied along c^*-axis up to 16 T. Above 0.5 GPa, (TMTTF)₂Br exhibits incommensurate spin density wave (ISDW) transition at low temperature. With increasing pressure, spin density wave (SDW) transition temperature T_SDW decreases from 19.5 K at 0.5 GPa to 12.5 K at 2.1 GPa. In the incommensurate SDW phase, with increasing magnetic field, T_SDW increases quadratically and the coefficient of quadratic term increases with increasing pressure. These results are qualitatively consistent with the prediction of the mean-field theory based on the imperfection of the nesting of Fermi surface. The relation between the coefficient of the quadratic term and T_SDW at zero magnetic field can be explained by the mean-field theory with taking into account the reduction of the coupling constant N(0)I by pressure.

Original language	English
Pages (from-to)	65-66
Number of pages	2
Journal	Synthetic Metals
Volume	133-134
DOIs	https://doi.org/10.1016/S0379-6779(02)00266-7
Publication status	Published - 2003 Mar 13
Event	ISCOM 2001 - Rusutsu, Hokkaido, Japan Duration: 2001 Sep 10 → 2001 Sep 14

Keywords

Magnetoresistance
Spin density wave
Transport measurement

ASJC Scopus subject areas

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

Access to Document

10.1016/S0379-6779(02)00266-7

Fingerprint Dive into the research topics of 'Magnetic field dependence of incommensurate SDW transition in (TMTTF)<sub>2</sub>Br'. Together they form a unique fingerprint.

Cite this

@article{c43b5cdafcb44b3384363cabd47dbbd8,

title = "Magnetic field dependence of incommensurate SDW transition in (TMTTF)2Br",

abstract = "Resistivity measurements were performed on (TMTTF)2Br under pressure. Magnetic field was applied along c*-axis up to 16 T. Above 0.5 GPa, (TMTTF)2Br exhibits incommensurate spin density wave (ISDW) transition at low temperature. With increasing pressure, spin density wave (SDW) transition temperature TSDW decreases from 19.5 K at 0.5 GPa to 12.5 K at 2.1 GPa. In the incommensurate SDW phase, with increasing magnetic field, TSDW increases quadratically and the coefficient of quadratic term increases with increasing pressure. These results are qualitatively consistent with the prediction of the mean-field theory based on the imperfection of the nesting of Fermi surface. The relation between the coefficient of the quadratic term and TSDW at zero magnetic field can be explained by the mean-field theory with taking into account the reduction of the coupling constant N(0)I by pressure.",

keywords = "Magnetoresistance, Spin density wave, Transport measurement",

author = "A. Ishikawa and N. Matsunaga and K. Nomura and T. Nakamura and T. Takahashi and G. Saito",

note = "Funding Information: Some of this work was carried out as part of the {\textquoteleft}Research for the Future{\textquoteright} project, JSPS-RFTF97P00105, supported by the Japan Society for the Promotion of Science. Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.; ISCOM 2001 ; Conference date: 10-09-2001 Through 14-09-2001",

year = "2003",

month = mar,

day = "13",

doi = "10.1016/S0379-6779(02)00266-7",

language = "English",

volume = "133-134",

pages = "65--66",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Magnetic field dependence of incommensurate SDW transition in (TMTTF)2Br

AU - Ishikawa, A.

AU - Matsunaga, N.

AU - Nomura, K.

AU - Nakamura, T.

AU - Takahashi, T.

AU - Saito, G.

N1 - Funding Information: Some of this work was carried out as part of the ‘Research for the Future’ project, JSPS-RFTF97P00105, supported by the Japan Society for the Promotion of Science. Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

PY - 2003/3/13

Y1 - 2003/3/13

N2 - Resistivity measurements were performed on (TMTTF)2Br under pressure. Magnetic field was applied along c*-axis up to 16 T. Above 0.5 GPa, (TMTTF)2Br exhibits incommensurate spin density wave (ISDW) transition at low temperature. With increasing pressure, spin density wave (SDW) transition temperature TSDW decreases from 19.5 K at 0.5 GPa to 12.5 K at 2.1 GPa. In the incommensurate SDW phase, with increasing magnetic field, TSDW increases quadratically and the coefficient of quadratic term increases with increasing pressure. These results are qualitatively consistent with the prediction of the mean-field theory based on the imperfection of the nesting of Fermi surface. The relation between the coefficient of the quadratic term and TSDW at zero magnetic field can be explained by the mean-field theory with taking into account the reduction of the coupling constant N(0)I by pressure.

AB - Resistivity measurements were performed on (TMTTF)2Br under pressure. Magnetic field was applied along c*-axis up to 16 T. Above 0.5 GPa, (TMTTF)2Br exhibits incommensurate spin density wave (ISDW) transition at low temperature. With increasing pressure, spin density wave (SDW) transition temperature TSDW decreases from 19.5 K at 0.5 GPa to 12.5 K at 2.1 GPa. In the incommensurate SDW phase, with increasing magnetic field, TSDW increases quadratically and the coefficient of quadratic term increases with increasing pressure. These results are qualitatively consistent with the prediction of the mean-field theory based on the imperfection of the nesting of Fermi surface. The relation between the coefficient of the quadratic term and TSDW at zero magnetic field can be explained by the mean-field theory with taking into account the reduction of the coupling constant N(0)I by pressure.

KW - Magnetoresistance

KW - Spin density wave

KW - Transport measurement

UR - http://www.scopus.com/inward/record.url?scp=0037435317&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037435317&partnerID=8YFLogxK

U2 - 10.1016/S0379-6779(02)00266-7

DO - 10.1016/S0379-6779(02)00266-7

M3 - Conference article

AN - SCOPUS:0037435317

VL - 133-134

SP - 65

EP - 66

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

T2 - ISCOM 2001

Y2 - 10 September 2001 through 14 September 2001

ER -