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

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1297-1298
Number of pages2
JournalSynthetic Metals
Volume137
Issue number1-3
DOIs
Publication statusPublished - 2003 Apr 4
EventICSM 2002 - Shanghai, China
Duration: 2002 Jun 292002 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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