NMR evidence for antiferromagnetic spin fluctuations in superconducting λ-(BETS)2GaCl4

S. Takagi; D. Maruta; H. Sasaki; H. Uozaki; H. Tsuchiya; Y. Abe; Y. Ishizaki; E. Negishi; H. Matsui; S. Endo; N. Toyota

doi:10.1016/S0379-6779(02)00985-2

NMR evidence for antiferromagnetic spin fluctuations in superconducting λ-(BETS)₂GaCl₄

S. Takagi, D. Maruta, H. Sasaki, H. Uozaki, H. Tsuchiya, Y. Abe, Y. Ishizaki, E. Negishi, H. Matsui, S. Endo, N. Toyota

SCI - Physics

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

2 Citations (Scopus)

Abstract

The microscopic magnetic properties of superconducting λ-(BETS)₂GaCl₄T_c≅K) have been investigated by both ⁷⁷Se and ¹H NMR in the normal state. Both the Knight shifts and the linewidths of ⁷⁷Se NMR decrease significantly below 30 K, whereas 1/(⁷⁷T₁T) does not show any corresponding decrease down to 7.1 K. 1(¹T₁T) of ¹H NMR, on the other hand, increases remarkably below 25 K. These results are explained consistently in terms of the development of antiferromagnetic spin fluctuations in π-electrons at low T.

Original language	English
Pages (from-to)	1297-1298
Number of pages	2
Journal	Synthetic Metals
Volume	137
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(02)00985-2
Publication status	Published - 2003 Apr 4
Event	ICSM 2002 - Shanghai, China Duration: 2002 Jun 29 → 2002 Jul 5

Keywords

Antiferromagnetic spin fluctuations
BETS
Nuclear magnetic resonance spectroscopy
Organic superconductors
λ-(BETS)GaCl

ASJC Scopus subject areas

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

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10.1016/S0379-6779(02)00985-2

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@article{b4131d277092491c9b6480e254f30cd7,

title = "NMR evidence for antiferromagnetic spin fluctuations in superconducting λ-(BETS)2GaCl4",

abstract = "The microscopic magnetic properties of superconducting λ-(BETS)2GaCl4Tc≅K) have been investigated by both 77Se and 1H NMR in the normal state. Both the Knight shifts and the linewidths of 77Se NMR decrease significantly below 30 K, whereas 1/(77T1T) does not show any corresponding decrease down to 7.1 K. 1(1T1T) of 1H NMR, on the other hand, increases remarkably below 25 K. These results are explained consistently in terms of the development of antiferromagnetic spin fluctuations in π-electrons at low T.",

keywords = "Antiferromagnetic spin fluctuations, BETS, Nuclear magnetic resonance spectroscopy, Organic superconductors, λ-(BETS)GaCl",

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

year = "2003",

month = apr,

day = "4",

doi = "10.1016/S0379-6779(02)00985-2",

language = "English",

volume = "137",

pages = "1297--1298",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

number = "1-3",

}

TY - JOUR

T1 - NMR evidence for antiferromagnetic spin fluctuations in superconducting λ-(BETS)2GaCl4

AU - Takagi, S.

AU - Maruta, D.

AU - Sasaki, H.

AU - Uozaki, H.

AU - Tsuchiya, H.

AU - Abe, Y.

AU - Ishizaki, Y.

AU - Negishi, E.

AU - Matsui, H.

AU - Endo, S.

AU - Toyota, N.

PY - 2003/4/4

Y1 - 2003/4/4

N2 - The microscopic magnetic properties of superconducting λ-(BETS)2GaCl4Tc≅K) have been investigated by both 77Se and 1H NMR in the normal state. Both the Knight shifts and the linewidths of 77Se NMR decrease significantly below 30 K, whereas 1/(77T1T) does not show any corresponding decrease down to 7.1 K. 1(1T1T) of 1H NMR, on the other hand, increases remarkably below 25 K. These results are explained consistently in terms of the development of antiferromagnetic spin fluctuations in π-electrons at low T.

AB - The microscopic magnetic properties of superconducting λ-(BETS)2GaCl4Tc≅K) have been investigated by both 77Se and 1H NMR in the normal state. Both the Knight shifts and the linewidths of 77Se NMR decrease significantly below 30 K, whereas 1/(77T1T) does not show any corresponding decrease down to 7.1 K. 1(1T1T) of 1H NMR, on the other hand, increases remarkably below 25 K. These results are explained consistently in terms of the development of antiferromagnetic spin fluctuations in π-electrons at low T.

KW - Antiferromagnetic spin fluctuations

KW - BETS

KW - Nuclear magnetic resonance spectroscopy

KW - Organic superconductors

KW - λ-(BETS)GaCl

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U2 - 10.1016/S0379-6779(02)00985-2

DO - 10.1016/S0379-6779(02)00985-2

M3 - Conference article

AN - SCOPUS:0037419250

VL - 137

SP - 1297

EP - 1298

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 1-3

T2 - ICSM 2002

Y2 - 29 June 2002 through 5 July 2002

ER -