NMR Evidence for Antiferromagnetic Transition in the Single-Component Molecular Conductor, [Au(tmdt)<SUB>2</SUB>] at 110 K

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  • Hara Yohta
    Department of Applied Physics, University of Tokyo
  • Miyagawa Kazuya
    Department of Applied Physics, University of Tokyo CREST-JST, Kawaguchi
  • Kanoda Kazushi
    Department of Applied Physics, University of Tokyo CREST-JST, Kawaguchi
  • Shimamura Mina
    Research Centre for Spectrochemistry, Graduate School of Science, University of Tokyo
  • Zhou Biao
    Department of Chemistry, College of Humanities and Sciences, Nihon University
  • Kobayashi Akiko
    Research Centre for Spectrochemistry, Graduate School of Science, University of Tokyo Department of Chemistry, College of Humanities and Sciences, Nihon University
  • Kobayashi Hayao
    CREST-JST, Kawaguchi Department of Chemistry, College of Humanities and Sciences, Nihon University Institute for Molecular Science

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  • NMR evidence for antiferromagnetic transition in the single-component molecular conductor, 〔Au(tmdt)2〕 at 110K
  • NMR evidence for antiferromagnetic transition in the single component molecular conductor Au tmdt 2 at 110K

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Abstract

We present the results of a 1H NMR study of the single-component molecular conductor, [Au(tmdt)2]. A steep increase in the NMR line width and a peak formation of the nuclear spin–lattice relaxation rate, 1⁄T1, were observed at around 110 K. This behavior provides clear and microscopic evidences for a magnetic phase transition at considerably high temperature among organic conductors. The observed variation in 1⁄T1 with respect to temperature indicates the highly correlated nature of the metallic phase.

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