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Full-Text Articles in Quantum Physics
Non-Mean-Field Interpretation Of The Irreversibility Line In Spin-Glasses, A. P. Malozemoff, S. E. Barnes, B. Barbara
Non-Mean-Field Interpretation Of The Irreversibility Line In Spin-Glasses, A. P. Malozemoff, S. E. Barnes, B. Barbara
Physics Articles and Papers
Susceptibility data on an amorphous GdAl spin-glass show an irreversibility onset line t=-A-H2/φ- and a susceptibility crossover line t=+A+H2/φ+ (t is reduced temperature; H is field). The exponents φ are both close to 3, and the amplitudes A differ only by a factor of 2. In contrast to earlier explanations of the irreversibility in terms of a de Almeida-Thouless mean-field instability, here both crossovers are explained in terms of a non-mean-field scaling theory.