Magnetic Determination of Ginzburg-Landau Coherence Length for Organic Superconductor k-(BEDT-TTF)2X (X = Cu(NCS)2, Cu[N(CN)2]Br): Effect of Isotope Substitution

Hiroshi Ito; Masashi Watanabe; Yoshio Nogami; Takehiko Ishiguro; Tokutaro Komatsu; Gunzi Saito; Nobuyoshi Hosoito

doi:10.1143/JPSJ.60.3230

Magnetic Determination of Ginzburg-Landau Coherence Length for Organic Superconductor k-(BEDT-TTF)2X (X = Cu(NCS)2, Cu[N(CN)2]Br): Effect of Isotope Substitution

Hiroshi Ito, Masashi Watanabe, Yoshio Nogami, Takehiko Ishiguro, Tokutaro Komatsu, Gunzi Saito, Nobuyoshi Hosoito

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

63 Citations (Scopus)

Abstract

The Ginzburg-Landau coherence lengths are determined from the temperature dependence of the magnetization by fitting measured results with the renormalization theory of the fluctuation developed for layered superconductors. The derived interlayer coherence lengths are 6±2Å and 3.2±0.5Å for k-(BEDT-TTF)2Cu-[N(CN)2]Br and k-(BEDT-TTF)2Cu(NCS)2, respectively, which are remarkably shorter than the interlayer spacing. It is also found that these coherence lengths are virtually unaffected by isotope substitution in BEDT-TTF molecules.

Original language	English
Pages (from-to)	3230-3233
Number of pages	4
Journal	journal of the physical society of japan
Volume	60
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.60.3230
Publication status	Published - Oct 1991
Externally published	Yes

Keywords

GL coherence length
diamagnetism
isotope effect
organic superconductor
superconductivity fluctuation
two-dimensionality

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.60.3230

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Magnetic Determination of Ginzburg-Landau Coherence Length for Organic Superconductor k-(BEDT-TTF)2X (X = Cu(NCS)2, Cu[N(CN)2]Br) : Effect of Isotope Substitution. / Ito, Hiroshi; Watanabe, Masashi; Nogami, Yoshio; Ishiguro, Takehiko; Komatsu, Tokutaro; Saito, Gunzi; Hosoito, Nobuyoshi.

In: journal of the physical society of japan, Vol. 60, No. 10, 10.1991, p. 3230-3233.

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

Ito, Hiroshi ; Watanabe, Masashi ; Nogami, Yoshio ; Ishiguro, Takehiko ; Komatsu, Tokutaro ; Saito, Gunzi ; Hosoito, Nobuyoshi. / Magnetic Determination of Ginzburg-Landau Coherence Length for Organic Superconductor k-(BEDT-TTF)2X (X = Cu(NCS)2, Cu[N(CN)2]Br) : Effect of Isotope Substitution. In: journal of the physical society of japan. 1991 ; Vol. 60, No. 10. pp. 3230-3233.

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title = "Magnetic Determination of Ginzburg-Landau Coherence Length for Organic Superconductor k-(BEDT-TTF)2X (X = Cu(NCS)2, Cu[N(CN)2]Br): Effect of Isotope Substitution",

abstract = "The Ginzburg-Landau coherence lengths are determined from the temperature dependence of the magnetization by fitting measured results with the renormalization theory of the fluctuation developed for layered superconductors. The derived interlayer coherence lengths are 6±2{\AA} and 3.2±0.5{\AA} for k-(BEDT-TTF)2Cu-[N(CN)2]Br and k-(BEDT-TTF)2Cu(NCS)2, respectively, which are remarkably shorter than the interlayer spacing. It is also found that these coherence lengths are virtually unaffected by isotope substitution in BEDT-TTF molecules.",

keywords = "GL coherence length, diamagnetism, isotope effect, organic superconductor, superconductivity fluctuation, two-dimensionality",

author = "Hiroshi Ito and Masashi Watanabe and Yoshio Nogami and Takehiko Ishiguro and Tokutaro Komatsu and Gunzi Saito and Nobuyoshi Hosoito",

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T2 - Effect of Isotope Substitution

AU - Ito, Hiroshi

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AU - Nogami, Yoshio

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AB - The Ginzburg-Landau coherence lengths are determined from the temperature dependence of the magnetization by fitting measured results with the renormalization theory of the fluctuation developed for layered superconductors. The derived interlayer coherence lengths are 6±2Å and 3.2±0.5Å for k-(BEDT-TTF)2Cu-[N(CN)2]Br and k-(BEDT-TTF)2Cu(NCS)2, respectively, which are remarkably shorter than the interlayer spacing. It is also found that these coherence lengths are virtually unaffected by isotope substitution in BEDT-TTF molecules.

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