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Spin fluctuations in the exotic metallic state of Sr_2RuO_4 studied with β-NMR

机译:β-NMR研究Sr_2RuO_4的奇异金属态的自旋涨落

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摘要

A β-NMR study was performed on a Sr_2RuO_4 crystal in the metallic state using a beam of spin-polarized ~8Li~+ implanted at a mean depth of 90 nm. The ~8Li~+ spin-lattice relaxation rate is strongly influenced by the onset of incommensurate spin fluctuations. The nuclear relaxation rate can be explained using previously published bulk ~(17)O NMR and inelastic neutron spectroscopy measurements of the dynamic magnetic susceptibility to model the hyperfine coupling. A well-resolved quadrupolar-split NMR for ~8Li~+ implies a static stopping position in an interstitial site. The ~8Li~+ Knight shift is highly sensitive to the anisotropic static susceptibility.
机译:使用以90 nm平均深度注入的自旋极化〜8Li〜+光束对处于金属态的Sr_2RuO_4晶体进行了β-NMR研究。 〜8Li〜+自旋晶格弛豫速率受不适当的自旋涨落的强烈影响。可以使用以前发表的体(17)O NMR和动态磁化率的非弹性中子光谱测量来解释超精细耦合,从而解释核弛豫速率。 〜8Li〜+的良好分辨四极分裂NMR表示间隙位置中的静态停止位置。 〜8Li〜+ Knight位移对各向异性静磁化率非常敏感。

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  • 来源
    《Physical review》 |2015年第24期|241113.1-241113.6|共6页
  • 作者单位

    Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1 ,Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, Canada V6T 1Z1 ,Chemistry Department, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1;

    Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, Canada V6T 1Z1;

    Physik-Department, Technische Universitaet Muenchen, James-Franck-Strasse 1, 85748 Garching bei Muenchen, Germany;

    Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1 ,Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, Canada V6T 1Z1 ,TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3;

    TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3;

    Chemistry Department, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1;

    TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3;

    TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3;

    Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland;

    Quantum Materials Laboratory, Department of Physics, Kyoto University, Kyoto 606-8502, Japan;

    Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1 ,Chemistry Department, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ruthenates; novel experimental methods; measurements;

    机译:钌酸新颖的实验方法;测量;

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