Dielectric response in the metallic states of λ-(BEDT-TSF)2FeCl4

H. Matsui; H. Tsuchiya; H. Uozaki; Y. Abe; Y. Ishizaki; E. Negishi; S. Endo; N. Toyota

doi:10.1016/S0379-6779(02)00346-6

Dielectric response in the metallic states of λ-(BEDT-TSF)₂FeCl₄

H. Matsui, H. Tsuchiya, H. Uozaki, Y. Abe, Y. Ishizaki, E. Negishi, S. Endo, N. Toyota

SCI - Physics

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

1 Citation (Scopus)

Abstract

The microwave conductivity σ₁^c and dielectric constant ₁^c along the c-axis in λ-(BEDT-TSF)₂FeCl₄ have been obtained by a cavity perturbation technique with TE₀₁₁ resonant mode at 16.3GHz. Even though the d.c. resistivity indicates a highly metallic state, we have found a novel dielectric response in ₁^c amounting to the order of 10³ from the metal-to-insulator transition temperature T_MI=8.3K to T_FM=70K, at which the noticeable specific-heat jump and ¹H NMR spectral splitting have been recently observed. The dielectric anomaly is attributed to the dynamical response of π-electron's charge degrees of freedom and could be interrelated to the π-d interaction.

Original language	English
Pages (from-to)	559-560
Number of pages	2
Journal	Synthetic Metals
Volume	133-134
DOIs	https://doi.org/10.1016/S0379-6779(02)00346-6
Publication status	Published - 2003 Mar 13
Event	ISCOM 2001 - Rusutsu, Hokkaido, Japan Duration: 2001 Sept 10 → 2001 Sept 14

Keywords

Charge disproportionation
Dielectric function
Metal-to-insulator transition
Microwave
λ-(BEDT-TSF)FeCl
π-d interaction

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)00346-6

Cite this

@article{7946fd21ef16467f9e589c92b5353c56,

title = "Dielectric response in the metallic states of λ-(BEDT-TSF)2FeCl4",

abstract = "The microwave conductivity σ1c and dielectric constant 1c along the c-axis in λ-(BEDT-TSF)2FeCl4 have been obtained by a cavity perturbation technique with TE011 resonant mode at 16.3GHz. Even though the d.c. resistivity indicates a highly metallic state, we have found a novel dielectric response in 1c amounting to the order of 103 from the metal-to-insulator transition temperature TMI=8.3K to TFM=70K, at which the noticeable specific-heat jump and 1H NMR spectral splitting have been recently observed. The dielectric anomaly is attributed to the dynamical response of π-electron's charge degrees of freedom and could be interrelated to the π-d interaction.",

keywords = "Charge disproportionation, Dielectric function, Metal-to-insulator transition, Microwave, λ-(BEDT-TSF)FeCl, π-d interaction",

author = "H. Matsui and H. Tsuchiya and H. Uozaki and Y. Abe and Y. Ishizaki and E. Negishi and S. Endo and N. Toyota",

year = "2003",

month = mar,

day = "13",

doi = "10.1016/S0379-6779(02)00346-6",

language = "English",

volume = "133-134",

pages = "559--560",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

note = "ISCOM 2001 ; Conference date: 10-09-2001 Through 14-09-2001",

}

TY - JOUR

T1 - Dielectric response in the metallic states of λ-(BEDT-TSF)2FeCl4

AU - Matsui, H.

AU - Tsuchiya, H.

AU - Uozaki, H.

AU - Abe, Y.

AU - Ishizaki, Y.

AU - Negishi, E.

AU - Endo, S.

AU - Toyota, N.

PY - 2003/3/13

Y1 - 2003/3/13

N2 - The microwave conductivity σ1c and dielectric constant 1c along the c-axis in λ-(BEDT-TSF)2FeCl4 have been obtained by a cavity perturbation technique with TE011 resonant mode at 16.3GHz. Even though the d.c. resistivity indicates a highly metallic state, we have found a novel dielectric response in 1c amounting to the order of 103 from the metal-to-insulator transition temperature TMI=8.3K to TFM=70K, at which the noticeable specific-heat jump and 1H NMR spectral splitting have been recently observed. The dielectric anomaly is attributed to the dynamical response of π-electron's charge degrees of freedom and could be interrelated to the π-d interaction.

AB - The microwave conductivity σ1c and dielectric constant 1c along the c-axis in λ-(BEDT-TSF)2FeCl4 have been obtained by a cavity perturbation technique with TE011 resonant mode at 16.3GHz. Even though the d.c. resistivity indicates a highly metallic state, we have found a novel dielectric response in 1c amounting to the order of 103 from the metal-to-insulator transition temperature TMI=8.3K to TFM=70K, at which the noticeable specific-heat jump and 1H NMR spectral splitting have been recently observed. The dielectric anomaly is attributed to the dynamical response of π-electron's charge degrees of freedom and could be interrelated to the π-d interaction.

KW - Charge disproportionation

KW - Dielectric function

KW - Metal-to-insulator transition

KW - Microwave

KW - λ-(BEDT-TSF)FeCl

KW - π-d interaction

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U2 - 10.1016/S0379-6779(02)00346-6

DO - 10.1016/S0379-6779(02)00346-6

M3 - Conference article

AN - SCOPUS:0037435343

SN - 0379-6779

VL - 133-134

SP - 559

EP - 560

JO - Synthetic Metals

JF - Synthetic Metals

T2 - ISCOM 2001

Y2 - 10 September 2001 through 14 September 2001

ER -