Muon spin relaxation measurements of spin-correlation decay in spin-glassAgMn |
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| Authors: | R. H. Heffner D. W. Cooke M. Leon M. E. Schillaci D. E. Maclaughlin L. C. Gupta |
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| Affiliation: | (1) Los Alamos National Laboratory, 87545 Los Alamos, NM, USA;(2) University of California, 92521 Riverside, CA, USA;(3) Present address: Dept. of Physics, Memphis State University, Memphis, Tennessee, USA;(4) Present address: Tata Institute of Fundamental Research, Bombay, India |
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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.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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