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Some recent high-temperature experiments on spin-glasses

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Heidelberg Colloquium on Spin Glasses

Part of the book series: Lecture Notes in Physics ((LNP,volume 192))

Abstract

The experimental behavior of spin-glasses will be examined as the temperature is reduced towards the freezing temperature T f. First we will consider the effects of atomic short-range order, which unfortunately always occur in real systems, on the local magnetic correlations and magnetic phase diagrams. Then a number of high temperature (T≳Tf) experiments will be reviewed beginning with some static measurements such as resistivity, do susceptibility and specific heat, and extending to a few dynamical ones such as neutron spin echo, muon spin relaxation and ac susceptibility. The static experiments give us some insight into the development of local, spatial spin-correlations, while the dynamic ones can be related to time-correlation functions which are temperature dependent. Based upon these results many experimentalists interpret their data in terms of the growth of magnetic clusters, followed by cluster relaxation leading to a broad distribution of relaxation times which significantly shifts to longer time scales as T→>Tf +. Hence a spin-glass has similar properties to an ordinary glass.

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Authors and Affiliations

  1. Kamerlingh Onnes Laboratorium der Rijks-Universiteit Leiden, Leiden, The Netherlands

    J. A. Mydosh

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  1. J. A. Mydosh
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J. L. van Hemmen I. Morgenstern

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© 1983 Springer-Verlag

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Mydosh, J.A. (1983). Some recent high-temperature experiments on spin-glasses. In: van Hemmen, J.L., Morgenstern, I. (eds) Heidelberg Colloquium on Spin Glasses. Lecture Notes in Physics, vol 192. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-12872-7_41

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  • DOI: https://doi.org/10.1007/3-540-12872-7_41

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  • Print ISBN: 978-3-540-12872-4

  • Online ISBN: 978-3-540-38761-9

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