1 Ocak 2012 Dergi makalesi Açık Erişim

Sariyer, Ozan S.; Kabakcioglu, Alkan; Berker, A. Nihat

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    <subfield code="a">We investigate the dissipative loss in the +/- J Ising spin glass in three dimensions through the scaling of the hysteresis area, for a maximum magnetic field that is equal to the saturation field. We perform a systematic analysis for the whole range of the bond randomness as a function of the sweep rate by means of frustration-preserving hard-spin mean-field theory. Data collapse within the entirety of the spin-glass phase driven adiabatically (i.e., infinitely slow field variation) is found, revealing a power-law scaling of the hysteresis area as a function of the antiferromagnetic bond fraction and the temperature. Two dynamic regimes separated by a threshold frequency omega(c) characterize the dependence on the sweep rate of the oscillating field. For omega &amp;lt; omega(c), the hysteresis area is equal to its value in the adiabatic limit omega = 0, while for omega &amp;gt; omega(c) it increases with the frequency through another randomness-dependent power law.</subfield>
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    <subfield code="a">Sariyer, Ozan S.</subfield>
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    <subfield code="a">Deep spin-glass hysteresis-area collapse and scaling in the three-dimensional +/- J Ising model</subfield>
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