Experimental indications for a critical relaxation time in spin-glasses

Lundgren, L.; Svedlindh, Peter; Beckman, O.

doi:10.1103/physrevb.26.3990

Cited by 117 publications

(51 citation statements)

References 12 publications

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“…The value of zv was ϳ11 and that of the freezing temperature was ϳ45 K. These results are consistent with the models of disordered magnetic systems. [15][16][17] The results demonstrate the importance of fractal cluster contributions to the dielectric loss mechanism of poled PMN-PT single crystals. Dielectric loss in ferroelectrics has generally been attributed to domain-wall contributions.…”

mentioning

confidence: 73%

Importance of structural irregularity on dielectric loss in (1−x)Pb(Mg1/3Nb2/3)O3−(x)PbTiO3 crystals

Priya

Viehland

Uchino

2002

Applied Physics Letters

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The dielectric properties of (1−x)Pb(Mg1/3Nb2/3)O3−(x)PbTiO3 (PMN–PT) crystals have been investigated over a temperature range of 4 to 450 K at various frequencies. At low temperatures, an unusual frequency dependent plateau region in the absorption was observed between 75 and 175 K. At both higher and lower temperatures, the absorption was frequency independent. Analysis of the relaxation time constant revealed power-law divergence, typical of fractal behavior in disordered magnetic systems. The results demonstrate the importance of structural irregularities on the dielectric loss mechanism in poled oriented PMN–PT crystals.

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confidence: 73%

Importance of structural irregularity on dielectric loss in (1−x)Pb(Mg1/3Nb2/3)O3−(x)PbTiO3 crystals

Priya

Viehland

Uchino

2002

Applied Physics Letters

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“…The monopole conductivity (which in magnetic language is a time-dependent susceptibility) exhibits a field dependence different from that of a paramagnet (typically constant + O(H 2 ); ref. 34) or a spin glass (typically a weakly decreasing function of field 35,36 ). Our result illustrates the advantages of mapping a complex far-from-equilibrium system on to a weak electrolyte.…”

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confidence: 99%

Experimental signature of the attractive Coulomb force between positive and negative magnetic monopoles in spin ice

Paulsen¹,

Giblin²,

Lhotel³

et al. 2016

Nature Phys

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“…A constant external field (h 0 ) is applied and the change of magnetization (m) with time (t s ) observed. The relaxation rate of the magnetization is related to gir) according to 5 Bm/dlnt s ^m 0 (r m )g{T m ); T m *t s…”

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confidence: 99%

Dynamics of the Relaxation-Time Spectrum in a CuMn Spin-Glass

et al. 1983

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SQUID magnetometry measurements on a CuMn spin-glass reveal that the zero-fieldcooled magnetization strongly depends on the time the sample is kept at constant temperature prior to the field application. This result is evidently at variance with the common belief that an equilibrium spin-glass state is quickly obtained after cooling in zero field. The nonequilibrium behavior, as reflected in the complex time dependence of dm/dlnt f is interpreted to arise from slow dynamics of the relaxation-time spectrum.

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Experimental indications for a critical relaxation time in spin-glasses

Cited by 117 publications

References 12 publications

Importance of structural irregularity on dielectric loss in (1−x)Pb(Mg1/3Nb2/3)O3−(x)PbTiO3 crystals

Importance of structural irregularity on dielectric loss in (1−x)Pb(Mg1/3Nb2/3)O3−(x)PbTiO3 crystals

Experimental signature of the attractive Coulomb force between positive and negative magnetic monopoles in spin ice

Dynamics of the Relaxation-Time Spectrum in a CuMn Spin-Glass

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