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Muon spin relaxation measurements of spin-correlation decay in spin-glassAgMn

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Abstract

The field (H) dependence of the muon longitudinal spin-lattice relaxation rate well below the spin glass temperature inAgMn is found to obey an algebraic form given by (H)v−1 withv=0.54±0.05. This suggests that Mn spin correlations decay with time ast −v, in agreement with mean field theories of spin-glass dynamics which yieldv≲0.5. Near the glass temperature the agreement between the data and theory is not as good.

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Author notes

  1. D. W. Cooke

    Present address: Dept. of Physics, Memphis State University, Memphis, Tennessee, USA

  2. L. C. Gupta

    Present address: Tata Institute of Fundamental Research, Bombay, India

Authors and Affiliations

  1. Los Alamos National Laboratory, 87545, Los Alamos, NM, USA

    R. H. Heffner, D. W. Cooke, M. Leon & M. E. Schillaci

  2. University of California, 92521, Riverside, CA, USA

    D. E. Maclaughlin & L. C. Gupta

Authors
  1. R. H. Heffner
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  2. D. W. Cooke
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  3. M. Leon
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  4. M. E. Schillaci
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  5. D. E. Maclaughlin
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  6. L. C. Gupta
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Additional information

We are grateful to C.E. Olsen for preparing the samples, C. Boekema, S.A. Dodds, G.A. Gist, R.L. Hutson, S.L. Rudaz and A. Yaouanc for help during the experiments and to D.L. Huber and R.E. Walstedt for useful discussions. This work was performed under the auspices of the U.S. Department of Energy and was also supported by the U.S. National Science Foundation, Grant No. DMR-8115543.

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Heffner, R.H., Cooke, D.W., Leon, M. et al. Muon spin relaxation measurements of spin-correlation decay in spin-glassAgMn. Hyperfine Interact 18, 463–466 (1984). https://doi.org/10.1007/BF02064854

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  • DOI: https://doi.org/10.1007/BF02064854

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