MESOSCOPIC FLUCTUATIONS IN THE SPIN GLASS COPPER MANGANESE WITH GOLD

The temperature dependence of discrete spin fluctuation modes is investigated in the spin glass phase of CuMn, doped with Au to produce strong local anisotropy. As with the locally anisotropic spin glass AuFe, and unlike the nearly isotropic CuMn, individual few-state fluctuators are found and can b...

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Bibliographic Details
Published inFluctuation and noise letters Vol. 1; no. 3; pp. L155 - L161
Main Authors MERITHEW, R. D., FENIMORE, P. W., WEISSMAN, M. B.
Format Journal Article
LanguageEnglish
Published World Scientific Publishing Company 01.09.2001
Subjects
Arrhenius
noise
Ising
mesoscopic
Spin glass
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Summary:The temperature dependence of discrete spin fluctuation modes is investigated in the spin glass phase of CuMn, doped with Au to produce strong local anisotropy. As with the locally anisotropic spin glass AuFe, and unlike the nearly isotropic CuMn, individual few-state fluctuators are found and can be tracked vs. temperature. The kinetics follow Arrhenius laws, with normal attempt rates.
ISSN:0219-4775
1793-6780
DOI:10.1142/S0219477501000378