Determination of band-filling change in the two-dimensional organic conductor, τ-(EDO-S,S-DMEDT-TTF)2(AuBr2) 1+y, (y ≤ 0.875) by the quantum oscillation of magnetoresistance

Harukazu Yoshino; Keizo Murata; Tsutomu Nakanishi; Lin Li; Eun Sang Choi; David Graf; James S. Brooks; Yoshio Nogami; George C. Papavassiliou

doi:10.1143/JPSJ.74.417

Determination of band-filling change in the two-dimensional organic conductor, τ-(EDO-S,S-DMEDT-TTF)₂(AuBr₂) _1+y, (y ≤ 0.875) by the quantum oscillation of magnetoresistance

Harukazu Yoshino, Keizo Murata, Tsutomu Nakanishi, Lin Li, Eun Sang Choi, David Graf, James S. Brooks, Yoshio Nogami, George C. Papavassiliou

研究成果 › 査読

13 被引用数 (Scopus)

抄録

The effect of thermal treatment on the transport properties is studied for a two-dimensional organic conductor τ-(EDO-S,S-DMEDT-TTF) ₂(AuBr₂)_1+y, (y ≤ 0.875). The temperature dependence of the electric resistivity below room temperature was found to be changed from metallic down to low temperature to semiconducting by heating up to 420 K. One of the two frequencies of Shubnikov-de Haas oscillations are found to be different between the non-heated and heated parts from a single crystal, while no evidence of structural change in X-ray photograph was observed. The present result clearly shows that nominal valence or band filling can be controlled by simple thermal treatment for the quasi-two-dimensional organic metal. The mechanism of the change in the band filling is discussed in terms of anion decomposition.

本文言語	English
ページ（範囲）	417-424
ページ数	8
ジャーナル	journal of the physical society of japan
巻	74
号	1
DOI	https://doi.org/10.1143/JPSJ.74.417
出版ステータス	Published - 1月 2005

ASJC Scopus subject areas

物理学および天文学（全般）

文献へのアクセス

10.1143/JPSJ.74.417

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フィンガープリント

「Determination of band-filling change in the two-dimensional organic conductor, τ-(EDO-S,S-DMEDT-TTF)₂(AuBr₂) _1+y, (y ≤ 0.875) by the quantum oscillation of magnetoresistance」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル

Yoshino, H., Murata, K., Nakanishi, T., Li, L., Choi, E. S., Graf, D., Brooks, J. S., Nogami, Y., & Papavassiliou, G. C. (2005). Determination of band-filling change in the two-dimensional organic conductor, τ-(EDO-S,S-DMEDT-TTF)₂(AuBr₂) _1+y, (y ≤ 0.875) by the quantum oscillation of magnetoresistance. journal of the physical society of japan, 74(1), 417-424. https://doi.org/10.1143/JPSJ.74.417

Yoshino, H, Murata, K, Nakanishi, T, Li, L, Choi, ES, Graf, D, Brooks, JS, Nogami, Y & Papavassiliou, GC 2005, 'Determination of band-filling change in the two-dimensional organic conductor, τ-(EDO-S,S-DMEDT-TTF)₂(AuBr₂) _1+y, (y ≤ 0.875) by the quantum oscillation of magnetoresistance', journal of the physical society of japan, vol. 74, no. 1, pp. 417-424. https://doi.org/10.1143/JPSJ.74.417

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abstract = "The effect of thermal treatment on the transport properties is studied for a two-dimensional organic conductor τ-(EDO-S,S-DMEDT-TTF) 2(AuBr2)1+y, (y ≤ 0.875). The temperature dependence of the electric resistivity below room temperature was found to be changed from metallic down to low temperature to semiconducting by heating up to 420 K. One of the two frequencies of Shubnikov-de Haas oscillations are found to be different between the non-heated and heated parts from a single crystal, while no evidence of structural change in X-ray photograph was observed. The present result clearly shows that nominal valence or band filling can be controlled by simple thermal treatment for the quasi-two-dimensional organic metal. The mechanism of the change in the band filling is discussed in terms of anion decomposition.",

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AU - Yoshino, Harukazu

AU - Murata, Keizo

AU - Nakanishi, Tsutomu

AU - Li, Lin

AU - Choi, Eun Sang

AU - Graf, David

AU - Brooks, James S.

AU - Nogami, Yoshio

AU - Papavassiliou, George C.

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AB - The effect of thermal treatment on the transport properties is studied for a two-dimensional organic conductor τ-(EDO-S,S-DMEDT-TTF) 2(AuBr2)1+y, (y ≤ 0.875). The temperature dependence of the electric resistivity below room temperature was found to be changed from metallic down to low temperature to semiconducting by heating up to 420 K. One of the two frequencies of Shubnikov-de Haas oscillations are found to be different between the non-heated and heated parts from a single crystal, while no evidence of structural change in X-ray photograph was observed. The present result clearly shows that nominal valence or band filling can be controlled by simple thermal treatment for the quasi-two-dimensional organic metal. The mechanism of the change in the band filling is discussed in terms of anion decomposition.

KW - Band-filling control

KW - Magnetoresistance

KW - Organic conductor

KW - Quantum oscillations

KW - Quasi-two-dimensional system

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